CriticalCVE-2026-44950

    fs_read_glyphs() heap buffer overflow via cumulative glyph data overflow in libXfont2 (CVE-2026-44950)

    Published Last modified Sources: BSI, CVE.org, Msrc Update Guide, Red Hat, SUSE

    What is affected, what to do

    fs_read_glyphs() in the libXfont2 font-server client (src/fc/fserve.c) copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice (position, length) lies within the source bitmap buffer.

    Update SUSE Container suse/kiosk/tigervnc-x11vnc:1.14-63.8 to version 2.0.3-150000.3.6.1, SUSE Container suse/kiosk/xorg:21.1-83.7 to version 2.0.3-150000.3.6.1, SUSE Image SLES15-SP6-SAP to version 2.0.3-150000.3.6.1.

    Affected
    • SUSE Container suse/kiosk/tigervnc-x11vnc:1.14-63.8 lt ?..2.0.3-150000.3.6.1
    • SUSE Container suse/kiosk/xorg:21.1-83.7 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Azure-3P lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Azure-3P lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-GCE-3P lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-Azure lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-EC2 lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-GCE lt ?..2.0.3-150000.3.6.1
    • SUSE Image SLES-SAP-Azure lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-Azure-3P lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-Azure lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-EC2 lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-GCE lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-GCE lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAP-GCE-3P lt ?..2.0.7-160000.5.1
    • SUSE Image SLES-SAPCAL-GCE lt ?..2.0.7-160000.5.1
    • SUSE Image SLES12-SP5-Azure-SAP-BYOS lt ?..2.0.3-3.6.1
    • SUSE Image SLES12-SP5-Azure-SAP-On-Demand lt ?..2.0.3-3.6.1
    • SUSE Image SLES12-SP5-EC2-SAP-BYOS lt ?..2.0.3-3.6.1
    • SUSE Image SLES12-SP5-EC2-SAP-On-Demand lt ?..2.0.3-3.6.1
    • SUSE Image SLES12-SP5-GCE-SAP-BYOS lt ?..2.0.3-3.6.1
    • SUSE Image SLES12-SP5-GCE-SAP-On-Demand lt ?..2.0.3-3.6.1
    • SUSE Liberty Linux 10 lt ?..2.0.6-5.el10_2.3
    • SUSE Liberty Linux 8 lt ?..2.0.3-2.el8_10.3
    • SUSE Liberty Linux 9 lt ?..2.0.3-12.el9_8.3
    • SUSE Linux Enterprise Desktop 15 SP7 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Module for Basesystem 15 SP7 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP7 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP7 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 12 SP5-LTSS lt ?..2.0.3-3.6.1
    • SUSE Linux Enterprise Server 15 SP4-LTSS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP5-LTSS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP6-LTSS lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 16.0 lt ?..2.0.7-160000.5.1
    • SUSE Linux Enterprise Server for SAP applications 16.0 lt ?..2.0.7-160000.5.1
    • SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 lt ?..2.0.3-3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP4 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP5 lt ?..2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP6 lt ?..2.0.3-150000.3.6.1
    • SUSE Manager Proxy LTS 4.3 lt ?..2.0.3-150000.3.6.1
    • SUSE Manager Retail Branch Server LTS 4.3 lt ?..2.0.3-150000.3.6.1
    • SUSE Manager Server LTS 4.3 lt ?..2.0.3-150000.3.6.1
    • SUSE openSUSE Leap 16.0 lt ?..2.0.7-160000.5.1
    • SUSE openSUSE Tumbleweed lt ?..2.0.7-3.1
    • libXfont lte ?..2.0.8
    Fixed in
    • SUSE Container suse/kiosk/tigervnc-x11vnc:1.14-63.8 2.0.3-150000.3.6.1
    • SUSE Container suse/kiosk/xorg:21.1-83.7 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Azure-3P 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-BYOS-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-BYOS-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAP-Hardened-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP6-SAPCAL-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Azure-3P 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-BYOS-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-GCE-3P 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-BYOS-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAP-Hardened-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-Azure 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-EC2 2.0.3-150000.3.6.1
    • SUSE Image SLES15-SP7-SAPCAL-GCE 2.0.3-150000.3.6.1
    • SUSE Image SLES-SAP-Azure 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-Azure-3P 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-Azure 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-EC2 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-BYOS-GCE 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-GCE 2.0.7-160000.5.1
    • SUSE Image SLES-SAP-GCE-3P 2.0.7-160000.5.1
    • SUSE Image SLES-SAPCAL-GCE 2.0.7-160000.5.1
    • SUSE Image SLES12-SP5-Azure-SAP-BYOS 2.0.3-3.6.1
    • SUSE Image SLES12-SP5-Azure-SAP-On-Demand 2.0.3-3.6.1
    • SUSE Image SLES12-SP5-EC2-SAP-BYOS 2.0.3-3.6.1
    • SUSE Image SLES12-SP5-EC2-SAP-On-Demand 2.0.3-3.6.1
    • SUSE Image SLES12-SP5-GCE-SAP-BYOS 2.0.3-3.6.1
    • SUSE Image SLES12-SP5-GCE-SAP-On-Demand 2.0.3-3.6.1
    • SUSE Liberty Linux 10 2.0.6-5.el10_2.3
    • SUSE Liberty Linux 8 2.0.3-2.el8_10.3
    • SUSE Liberty Linux 9 2.0.3-12.el9_8.3
    • SUSE Linux Enterprise Desktop 15 SP7 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Module for Basesystem 15 SP7 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP7 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP7 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 12 SP5-LTSS 2.0.3-3.6.1
    • SUSE Linux Enterprise Server 15 SP4-LTSS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP5-LTSS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 15 SP6-LTSS 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server 16.0 2.0.7-160000.5.1
    • SUSE Linux Enterprise Server for SAP applications 16.0 2.0.7-160000.5.1
    • SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 2.0.3-3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP4 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP5 2.0.3-150000.3.6.1
    • SUSE Linux Enterprise Server for SAP Applications 15 SP6 2.0.3-150000.3.6.1
    • SUSE Manager Proxy LTS 4.3 2.0.3-150000.3.6.1
    • SUSE Manager Retail Branch Server LTS 4.3 2.0.3-150000.3.6.1
    • SUSE Manager Server LTS 4.3 2.0.3-150000.3.6.1
    • SUSE openSUSE Leap 16.0 2.0.7-160000.5.1
    • SUSE openSUSE Tumbleweed 2.0.7-3.1

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    9.5

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v4

    9.0

    CVSS v3

    Severity Critical on the scale from 0 to 10.

    Source: BSI, CVE.org, Msrc Update Guide, Red Hat, SUSE

    0.3 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 18.0

    Show all metrics
    Severity
    Critical
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    76.72 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    9.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    9.0
    CVSS v4

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    9.5
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.3 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    18.0
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    fs_read_glyphs() in the libXfont2 font-server client (src/fc/fserve.c) copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice (position, length) lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the allocation. A malicious font server can send overlapping source offsets -- for example 1000 glyphs each referencing {position:0, length:64} with nbytes=64. Each individual source range passes the existing validation, but the cumulative writes total 64000 bytes into a 64-byte destination buffer. This is a heap buffer overflow with attacker-controlled content.

    Source: BSI WID Portal, BSI CSAF, cvelistv5, NVD (NIST), Microsoft Security Update Guide, redhat_csaf, suse_csaf

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    libXfontlibXfont
    • ? – ≤ 2.0.8
    • —
    SUSEContainer suse/kiosk/tigervnc-x11vnc:1.14-63.8
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEContainer suse/kiosk/xorg:21.1-83.7
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES-SAP-Azure
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-Azure-3P
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-BYOS-Azure
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-BYOS-EC2
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-BYOS-GCE
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-GCE
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAP-GCE-3P
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES-SAPCAL-GCE
    • ? – < 2.0.7-160000.5.1
    • 2.0.7-160000.5.1
    SUSEImage SLES12-SP5-Azure-SAP-BYOS
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES12-SP5-Azure-SAP-On-Demand
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES12-SP5-EC2-SAP-BYOS
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES12-SP5-EC2-SAP-On-Demand
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES12-SP5-GCE-SAP-BYOS
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES12-SP5-GCE-SAP-On-Demand
    • ? – < 2.0.3-3.6.1
    • 2.0.3-3.6.1
    SUSEImage SLES15-SP6-SAP
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Azure-3P
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-BYOS
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-BYOS-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-BYOS-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-BYOS-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-BYOS
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-BYOS-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-BYOS-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-BYOS-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAP-Hardened-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAPCAL
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAPCAL-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAPCAL-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP6-SAPCAL-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-Azure-3P
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-BYOS-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-BYOS-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-BYOS-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-EC2
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-GCE
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-GCE-3P
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-Hardened-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1
    SUSEImage SLES15-SP7-SAP-Hardened-BYOS-Azure
    • ? – < 2.0.3-150000.3.6.1
    • 2.0.3-150000.3.6.1

    Vendors and products

    References & sources

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedCISA ADP

      Weakness type: CWE-122

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Weakness type (CWE)added
      —
      CWE-122

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    2. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-44950","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-09-10T17:19:50.287306Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    3. Receivedsuse.de

      CVSS V4.0: AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

      CVSS V3.1: AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

      Description added or changed

      Show 5 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      fs_read_glyphs() in the libXfont2 font-server client (src/fc/fserve.c) copies each glyph's bitmap into a single buffer. Existing checks validates only that the source slice (position, length) lies within the source bitmap buffer. It does not check whether the running destination cursor has exceeded the allocation. A malicious font server can send overlapping source offsets -- for example 1000 glyphs each referencing {position:0, length:64} with nbytes=64. Each individual source range passes the existing validation, but the cumulative writes total 64000 bytes into a 64-byte destination buffer. This is a heap buffer overflow with attacker-controlled content.
      CVSSadded
      —
      AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
      CVSSadded
      —
      AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/44xxx/CVE-2026-44950.json">CVE-2026-44950</a>
      Referenceadded
      —
      https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44950

      Source identifier: meissner@suse.de

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