HighCVE-2026-21383

Reusing a Nonce, Key Pair in Encryption in HLOS (CVE-2026-21383)

Published 06.07.2026Last modified 25.10.2026Sources: BSI, CVE.org

What is affected, what to do

Cryptographic Issue when using a static initialization vector for AES-GCM key wrapping, which requires a unique value for each call to ensure security.

Update Android to version 2026-09-05.

Affected: Qualcomm Snapdragon eq FastConnect 6900..FastConnect 6900
Qualcomm Snapdragon eq FastConnect 7800..FastConnect 7800
Qualcomm Snapdragon eq LeMans_AU_LGIT..LeMans_AU_LGIT
Qualcomm Snapdragon eq LeMansAU..LeMansAU
Qualcomm Snapdragon eq Pandeiro..Pandeiro
Qualcomm Snapdragon eq QAM8255P..QAM8255P
Qualcomm Snapdragon eq QAM8397P..QAM8397P
Qualcomm Snapdragon eq QAM8797P..QAM8797P
Qualcomm Snapdragon eq QAMSRV1H..QAMSRV1H
Qualcomm Snapdragon eq QAMSRV1M..QAMSRV1M
Qualcomm Snapdragon eq QCA6595AU..QCA6595AU
Qualcomm Snapdragon eq QCA6696..QCA6696
Qualcomm Snapdragon eq QCA6698AQ..QCA6698AQ
Qualcomm Snapdragon eq QCA6797AQ..QCA6797AQ
Qualcomm Snapdragon eq QCA8695AU..QCA8695AU
Qualcomm Snapdragon eq QDU1000..QDU1000
Qualcomm Snapdragon eq QDU1110..QDU1110
Qualcomm Snapdragon eq QDU1210..QDU1210
Qualcomm Snapdragon eq QDX1010..QDX1010
Qualcomm Snapdragon eq QDX1011..QDX1011
Qualcomm Snapdragon eq QLN1083BD..QLN1083BD
Qualcomm Snapdragon eq QLN1086BD..QLN1086BD
Qualcomm Snapdragon eq QPA1083BD..QPA1083BD
Qualcomm Snapdragon eq QPA1086BD..QPA1086BD
Qualcomm Snapdragon eq Qualcomm Dragonwing X100 Accelerator Card..Qualcomm Dragonwing X100 Accelerator Card
Qualcomm Snapdragon eq QXM1093..QXM1093
Qualcomm Snapdragon eq QXM1094..QXM1094
Qualcomm Snapdragon eq QXM1095..QXM1095
Qualcomm Snapdragon eq QXM1096..QXM1096
Qualcomm Snapdragon eq SA7255P..SA7255P
Qualcomm Snapdragon eq SA7775P..SA7775P
Qualcomm Snapdragon eq SA8255P..SA8255P
Qualcomm Snapdragon eq SA8620P..SA8620P
Qualcomm Snapdragon eq SA8770P..SA8770P
Qualcomm Snapdragon eq SA9000P..SA9000P
Qualcomm Snapdragon eq SAR1165P..SAR1165P
Qualcomm Snapdragon eq SAR2130P..SAR2130P
Qualcomm Snapdragon eq Snapdragon AR1 Gen 1 Platform..Snapdragon AR1 Gen 1 Platform
Qualcomm Snapdragon eq Snapdragon AR1+ Gen 1 Platform..Snapdragon AR1+ Gen 1 Platform
Qualcomm Snapdragon eq SRV1H..SRV1H
Qualcomm Snapdragon eq SRV1M..SRV1M
Qualcomm Snapdragon eq SXR2230P..SXR2230P
Qualcomm Snapdragon eq SXR2250P..SXR2250P
Qualcomm Snapdragon eq WCD9380..WCD9380
Qualcomm Snapdragon eq WCD9385..WCD9385
Qualcomm Snapdragon eq WCN3950..WCN3950
Qualcomm Snapdragon eq WCN7860..WCN7860
Qualcomm Snapdragon eq WCN7861..WCN7861
Qualcomm Snapdragon eq WSA8830..WSA8830
Qualcomm Snapdragon eq WSA8832..WSA8832
Qualcomm Snapdragon eq WSA8835..WSA8835
Qualcomm Snapdragon eq XRV7209..XRV7209
Qualcomm Snapdragon eq XRV9209..XRV9209

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Metrics

7.1

Priority

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

Source: NVD, CVSS v3

7.1

CVSS v3

Severity High on the scale from 0 to 10.

Source: BSI, CVE.org

0.1 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 0.9

Show all metrics

Severity: High
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: 55.73 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: 7.1 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: 7.1
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: 0.1 %; 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: 0.9; Low — this CVE sits in the lower 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: 06.07.2026
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: total; Source: CISA Vulnrichment, as of 7 July 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-323

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

Cryptographic Issue when using a static initialization vector for AES-GCM key wrapping, which requires a unique value for each call to ensure security.

Source: BSI WID Portal, BSI CSAF, NVD (NIST), cvelistv5

Affected products

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

Affected products
		Affected versions	Fixed in
Qualcomm, Inc.	Snapdragon	`LeMans_AU_LGIT` `SA8255P` `SRV1M` `QDU1000` `SA7775P` `QCA6698AQ` `WCD9385` `QDX1010` `QPA1083BD` `SA9000P` `WSA8835` `QAMSRV1M` `Pandeiro` `FastConnect 6900` `QDU1210` `SXR2230P` `QAM8255P` `WCN3950` `QLN1083BD` `WSA8832` `QCA8695AU` `WSA8830` `QAMSRV1H` `SAR2130P` `QDU1110` `SAR1165P` `QXM1095` `QCA6696` `QLN1086BD` `SA8770P` `Qualcomm Dragonwing X100 Accelerator Card` `QXM1093` `SA8620P` `QAM8797P` `Snapdragon AR1+ Gen 1 Platform` `WCD9380` `QAM8397P` `QCA6595AU` `QXM1096` `SXR2250P` `WCN7861` `FastConnect 7800` `QCA6797AQ` `LeMansAU` `SA7255P` `QXM1094` `WCN7860` `XRV9209`	— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

Vendors and products

Affected operating systems

Affected operating systems

Other	qualcomm	fastconnect_6900_firmware	—
Other	qualcomm	fastconnect_7800_firmware	—
Other	qualcomm	lemans_au_lgit_firmware	—
Other	qualcomm	lemansau_firmware	—
Other	qualcomm	pandeiro_firmware	—
Other	qualcomm	qam8255p_firmware	—
Other	qualcomm	qam8397p_firmware	—
Other	qualcomm	qam8797p_firmware	—
Other	qualcomm	qamsrv1h_firmware	—
Other	qualcomm	qamsrv1m_firmware	—
Other	qualcomm	qca6595au_firmware	—
Other	qualcomm	qca6696_firmware	—
Other	qualcomm	qca6698aq_firmware	—
Other	qualcomm	qca6797aq_firmware	—
Other	qualcomm	qca8695au_firmware	—
Other	qualcomm	qdu1000_firmware	—
Other	qualcomm	qdu1110_firmware	—
Other	qualcomm	qdu1210_firmware	—
Other	qualcomm	qdx1010_firmware	—
Other	qualcomm	qdx1011_firmware	—
Other	qualcomm	qln1083bd_firmware	—
Other	qualcomm	qln1086bd_firmware	—
Other	qualcomm	qpa1083bd_firmware	—
Other	qualcomm	qpa1086bd_firmware	—

Weakness classes (CWE)

CWE-323Reusing a Nonce, Key Pair in Encryption
Base
Nonces should be used for the present occasion and only once.
Entry at MITRE CWE-323

References & sources

docs.qualcomm.comproduct/publicresources/securitybulletin/july-2026-bulletin.htmlVendor advisory

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).

08.07.2026Record modifiedCISA ADP

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

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	changed	{"id":"CVE-2026-21383","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-07-06T20:55:25.178549Z"}	{"id":"CVE-2026-21383","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-07-07T00:00:00+00:00"}

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

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<a href="https://intel.neosec.eu/en/cve/CVE-2026-21383"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-21383.svg?lang=en" alt="CVE-2026-21383 – NEOSEC Intel" height="20"></a>