HighCVE-2023-33042

    Improper Input Validation in Modem (CVE-2023-33042)

    Published Sources: CVE.org

    What is affected, what to do

    Transient DOS in Modem after RRC Setup message is received.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Qualcomm Snapdragon eq 315 5G IoT Modem..315 5G IoT Modem
    • Qualcomm Snapdragon eq AR8035..AR8035
    • Qualcomm Snapdragon eq FastConnect 6200..FastConnect 6200
    • Qualcomm Snapdragon eq FastConnect 6700..FastConnect 6700
    • Qualcomm Snapdragon eq FastConnect 6800..FastConnect 6800
    • Qualcomm Snapdragon eq FastConnect 6900..FastConnect 6900
    • Qualcomm Snapdragon eq FastConnect 7800..FastConnect 7800
    • Qualcomm Snapdragon eq QCA6391..QCA6391
    • Qualcomm Snapdragon eq QCA6421..QCA6421
    • Qualcomm Snapdragon eq QCA6426..QCA6426
    • Qualcomm Snapdragon eq QCA6431..QCA6431
    • Qualcomm Snapdragon eq QCA6436..QCA6436
    • Qualcomm Snapdragon eq QCA6574A..QCA6574A
    • Qualcomm Snapdragon eq QCA6595AU..QCA6595AU
    • Qualcomm Snapdragon eq QCA6696..QCA6696
    • Qualcomm Snapdragon eq QCA6698AQ..QCA6698AQ
    • Qualcomm Snapdragon eq QCA8081..QCA8081
    • Qualcomm Snapdragon eq QCA8337..QCA8337
    • Qualcomm Snapdragon eq QCM6490..QCM6490
    • Qualcomm Snapdragon eq QCN6024..QCN6024
    • Qualcomm Snapdragon eq QCN9024..QCN9024
    • Qualcomm Snapdragon eq QCS6490..QCS6490
    • Qualcomm Snapdragon eq QCS8550..QCS8550
    • Qualcomm Snapdragon eq Qualcomm Video Collaboration VC3 Platform..Qualcomm Video Collaboration VC3 Platform
    • Qualcomm Snapdragon eq SD855..SD855
    • Qualcomm Snapdragon eq SD865 5G..SD865 5G
    • Qualcomm Snapdragon eq SD888..SD888
    • Qualcomm Snapdragon eq SDX55..SDX55
    • Qualcomm Snapdragon eq SDX57M..SDX57M
    • Qualcomm Snapdragon eq SM7250P..SM7250P
    • Qualcomm Snapdragon eq SM7315..SM7315
    • Qualcomm Snapdragon eq SM7325P..SM7325P
    • Qualcomm Snapdragon eq Snapdragon 4 Gen 1 Mobile Platform..Snapdragon 4 Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 480 5G Mobile Platform..Snapdragon 480 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 480+ 5G Mobile Platform (SM4350-AC)..Snapdragon 480+ 5G Mobile Platform (SM4350-AC)
    • Qualcomm Snapdragon eq Snapdragon 690 5G Mobile Platform..Snapdragon 690 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 695 5G Mobile Platform..Snapdragon 695 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 750G 5G Mobile Platform..Snapdragon 750G 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 765 5G Mobile Platform (SM7250-AA)..Snapdragon 765 5G Mobile Platform (SM7250-AA)
    • Qualcomm Snapdragon eq Snapdragon 765G 5G Mobile Platform (SM7250-AB)..Snapdragon 765G 5G Mobile Platform (SM7250-AB)
    • Qualcomm Snapdragon eq Snapdragon 768G 5G Mobile Platform (SM7250-AC)..Snapdragon 768G 5G Mobile Platform (SM7250-AC)
    • Qualcomm Snapdragon eq Snapdragon 778G 5G Mobile Platform..Snapdragon 778G 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)..Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
    • Qualcomm Snapdragon eq Snapdragon 780G 5G Mobile Platform..Snapdragon 780G 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 782G Mobile Platform (SM7325-AF)..Snapdragon 782G Mobile Platform (SM7325-AF)
    • Qualcomm Snapdragon eq Snapdragon 7c+ Gen 3 Compute..Snapdragon 7c+ Gen 3 Compute
    • Qualcomm Snapdragon eq Snapdragon 8 Gen 1 Mobile Platform..Snapdragon 8 Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 8+ Gen 1 Mobile Platform..Snapdragon 8+ Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 855 Mobile Platform..Snapdragon 855 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 855+/860 Mobile Platform (SM8150-AC)..Snapdragon 855+/860 Mobile Platform (SM8150-AC)
    • Qualcomm Snapdragon eq Snapdragon 865 5G Mobile Platform..Snapdragon 865 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 865+ 5G Mobile Platform (SM8250-AB)..Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
    • Qualcomm Snapdragon eq Snapdragon 870 5G Mobile Platform (SM8250-AC)..Snapdragon 870 5G Mobile Platform (SM8250-AC)
    • Qualcomm Snapdragon eq Snapdragon 888 5G Mobile Platform..Snapdragon 888 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 888+ 5G Mobile Platform (SM8350-AC)..Snapdragon 888+ 5G Mobile Platform (SM8350-AC)
    • Qualcomm Snapdragon eq Snapdragon Auto 5G Modem-RF..Snapdragon Auto 5G Modem-RF
    • Qualcomm Snapdragon eq Snapdragon X55 5G Modem-RF System..Snapdragon X55 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon X65 5G Modem-RF System..Snapdragon X65 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon X70 Modem-RF System..Snapdragon X70 Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon XR2 5G Platform..Snapdragon XR2 5G Platform
    • Qualcomm Snapdragon eq SXR2130..SXR2130
    • Qualcomm Snapdragon eq WCD9341..WCD9341
    • Qualcomm Snapdragon eq WCD9360..WCD9360
    • Qualcomm Snapdragon eq WCD9370..WCD9370
    • Qualcomm Snapdragon eq WCD9375..WCD9375
    • Qualcomm Snapdragon eq WCD9380..WCD9380
    • Qualcomm Snapdragon eq WCD9385..WCD9385
    • Qualcomm Snapdragon eq WCN3988..WCN3988
    • Qualcomm Snapdragon eq WCN6740..WCN6740
    • Qualcomm Snapdragon eq WSA8810..WSA8810
    • Qualcomm Snapdragon eq WSA8815..WSA8815
    • Qualcomm Snapdragon eq WSA8830..WSA8830
    • Qualcomm Snapdragon eq WSA8835..WSA8835

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

    Metrics

    7.5

    Priority

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

    Source: NVD, CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    0.6 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 49.1

    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
    60.70 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
    7.5 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
    7.5
    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
    0.6 %
    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
    49.1
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    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
    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-20

    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

    Transient DOS in Modem after RRC Setup message is received.

    Source: 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 versionsFixed in
    Qualcomm, Inc.Snapdragon
    • Snapdragon 782G Mobile Platform (SM7325-AF)
    • 315 5G IoT Modem
    • Snapdragon 780G 5G Mobile Platform
    • QCN9024
    • QCA6698AQ
    • WCN6740
    • WCD9385
    • QCN6024
    • WSA8810
    • Snapdragon 855+/860 Mobile Platform (SM8150-AC)
    • Snapdragon 855 Mobile Platform
    • Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
    • WSA8835
    • Snapdragon 768G 5G Mobile Platform (SM7250-AC)
    • FastConnect 6700
    • FastConnect 6900
    • Snapdragon 8+ Gen 1 Mobile Platform
    • QCA6431
    • WCD9375
    • Snapdragon X55 5G Modem-RF System
    • SDX55
    • Snapdragon 888 5G Mobile Platform
    • QCA6391
    • WSA8815
    • SM7315
    • Snapdragon Auto 5G Modem-RF
    • Snapdragon 865+ 5G Mobile Platform (SM8250-AB)
    • QCA8081
    • WSA8830
    • SM7325P
    • Snapdragon 695 5G Mobile Platform
    • Snapdragon 865 5G Mobile Platform
    • QCA6696
    • FastConnect 6200
    • SM7250P
    • WCD9360
    • Qualcomm Video Collaboration VC3 Platform
    • QCA6574A
    • Snapdragon 4 Gen 1 Mobile Platform
    • Snapdragon 870 5G Mobile Platform (SM8250-AC)
    • SXR2130
    • Snapdragon X70 Modem-RF System
    • Snapdragon 765G 5G Mobile Platform (SM7250-AB)
    • QCA8337
    • QCA6436
    • WCD9380
    • Snapdragon X65 5G Modem-RF System
    • Snapdragon 765 5G Mobile Platform (SM7250-AA)
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    Vendors and products

    Affected operating systems

    Affected operating systems
    Otherqualcomm315_5g_iot_modem_firmware—
    Otherqualcommar8035_firmware—
    Otherqualcommqca6390_firmware—
    Otherqualcommqca6391_firmware—
    Otherqualcommqca6421_firmware—
    Otherqualcommqca6426_firmware—
    Otherqualcommqca6431_firmware—
    Otherqualcommqca6436_firmware—
    Otherqualcommqca6574a_firmware—
    Otherqualcommqca6595au_firmware—
    Otherqualcommqca6696_firmware—
    Otherqualcommqca6698aq_firmware—
    Otherqualcommqca8081_firmware—
    Otherqualcommqca8337_firmware—
    Otherqualcommqcm6490_firmware—
    Otherqualcommqcn6024_firmware—
    Otherqualcommqcn9024_firmware—
    Otherqualcommqcs6490_firmware—
    Otherqualcommqcs8550_firmware—
    Otherqualcommsd855_firmware—
    Otherqualcommsd865_5g_firmware—
    Otherqualcommsd888_firmware—
    Otherqualcommsdx55_firmware—
    Otherqualcommsdx57m_firmware—

    Weakness classes (CWE)

    • CWE-20Improper Input Validation

      Class

      The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

      Entry at MITRE CWE-20

    References & sources

    • qualcomm.comcompany/product-security/bulletins/december-2023-bulletinVendor advisory
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