HighCVE-2025-47321

    Buffer Copy Without Checking Size of Input in Core Services (CVE-2025-47321)

    Published Sources: CVE.org

    What is affected, what to do

    Memory corruption while copying packets received from unix clients.

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

    Affected
    • Qualcomm Snapdragon eq AR8031..AR8031
    • Qualcomm Snapdragon eq AR8035..AR8035
    • Qualcomm Snapdragon eq CSRA6620..CSRA6620
    • Qualcomm Snapdragon eq CSRA6640..CSRA6640
    • Qualcomm Snapdragon eq FastConnect 6200..FastConnect 6200
    • Qualcomm Snapdragon eq FastConnect 6700..FastConnect 6700
    • Qualcomm Snapdragon eq FastConnect 6900..FastConnect 6900
    • Qualcomm Snapdragon eq FastConnect 7800..FastConnect 7800
    • Qualcomm Snapdragon eq QAM8255P..QAM8255P
    • Qualcomm Snapdragon eq QAM8650P..QAM8650P
    • Qualcomm Snapdragon eq QAM8775P..QAM8775P
    • Qualcomm Snapdragon eq QAMSRV1H..QAMSRV1H
    • Qualcomm Snapdragon eq QAMSRV1M..QAMSRV1M
    • Qualcomm Snapdragon eq QCA2066..QCA2066
    • Qualcomm Snapdragon eq QCA6174A..QCA6174A
    • Qualcomm Snapdragon eq QCA6391..QCA6391
    • Qualcomm Snapdragon eq QCA6574..QCA6574
    • Qualcomm Snapdragon eq QCA6574A..QCA6574A
    • Qualcomm Snapdragon eq QCA6574AU..QCA6574AU
    • Qualcomm Snapdragon eq QCA6595AU..QCA6595AU
    • Qualcomm Snapdragon eq QCA6696..QCA6696
    • Qualcomm Snapdragon eq QCA8081..QCA8081
    • Qualcomm Snapdragon eq QCA8337..QCA8337
    • Qualcomm Snapdragon eq QCM5430..QCM5430
    • Qualcomm Snapdragon eq QCM6125..QCM6125
    • Qualcomm Snapdragon eq QCM6490..QCM6490
    • Qualcomm Snapdragon eq QCM8550..QCM8550
    • Qualcomm Snapdragon eq QCN6024..QCN6024
    • Qualcomm Snapdragon eq QCN9011..QCN9011
    • Qualcomm Snapdragon eq QCN9012..QCN9012
    • Qualcomm Snapdragon eq QCN9024..QCN9024
    • Qualcomm Snapdragon eq QCS5430..QCS5430
    • Qualcomm Snapdragon eq QCS6125..QCS6125
    • Qualcomm Snapdragon eq QCS6490..QCS6490
    • Qualcomm Snapdragon eq QCS8550..QCS8550
    • Qualcomm Snapdragon eq QEP8111..QEP8111
    • Qualcomm Snapdragon eq QMP1000..QMP1000
    • Qualcomm Snapdragon eq Qualcommr Video Collaboration VC1 Platform..Qualcommr Video Collaboration VC1 Platform
    • Qualcomm Snapdragon eq Qualcommr Video Collaboration VC3 Platform..Qualcommr Video Collaboration VC3 Platform
    • Qualcomm Snapdragon eq Robotics RB2 Platform..Robotics RB2 Platform
    • Qualcomm Snapdragon eq SA4150P..SA4150P
    • Qualcomm Snapdragon eq SA4155P..SA4155P
    • Qualcomm Snapdragon eq SA6155P..SA6155P
    • Qualcomm Snapdragon eq SA7255P..SA7255P
    • Qualcomm Snapdragon eq SA7775P..SA7775P
    • Qualcomm Snapdragon eq SA8155P..SA8155P
    • Qualcomm Snapdragon eq SA8195P..SA8195P
    • Qualcomm Snapdragon eq SA8255P..SA8255P
    • Qualcomm Snapdragon eq SA8620P..SA8620P
    • Qualcomm Snapdragon eq SA8650P..SA8650P
    • Qualcomm Snapdragon eq SA8770P..SA8770P
    • Qualcomm Snapdragon eq SA8775P..SA8775P
    • Qualcomm Snapdragon eq SA9000P..SA9000P
    • Qualcomm Snapdragon eq SDX61..SDX61
    • Qualcomm Snapdragon eq SM6475..SM6475
    • Qualcomm Snapdragon eq SM6650..SM6650
    • Qualcomm Snapdragon eq SM6650P..SM6650P
    • Qualcomm Snapdragon eq SM7250P..SM7250P
    • Qualcomm Snapdragon eq SM7435..SM7435
    • Qualcomm Snapdragon eq SM7635..SM7635
    • Qualcomm Snapdragon eq SM7635P..SM7635P
    • Qualcomm Snapdragon eq SM8735..SM8735
    • Qualcomm Snapdragon eq SM8750..SM8750
    • Qualcomm Snapdragon eq SM8750P..SM8750P
    • Qualcomm Snapdragon eq Smart Audio 400 Platform..Smart Audio 400 Platform
    • Qualcomm Snapdragon eq Snapdragon 4 Gen 2 Mobile Platform..Snapdragon 4 Gen 2 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 6 Gen 1 Mobile Platform..Snapdragon 6 Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 680 4G Mobile Platform..Snapdragon 680 4G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 685 4G Mobile Platform (SM6225-AD)..Snapdragon 685 4G Mobile Platform (SM6225-AD)
    • 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 AR1 Gen 1 Platform..Snapdragon AR1 Gen 1 Platform
    • Qualcomm Snapdragon eq Snapdragon AR1 Gen 1 Platform "Luna1"..Snapdragon AR1 Gen 1 Platform "Luna1"
    • Qualcomm Snapdragon eq Snapdragon AR2 Gen 1 Platform..Snapdragon AR2 Gen 1 Platform
    • Qualcomm Snapdragon eq Snapdragon W5+ Gen 1 Wearable Platform..Snapdragon W5+ Gen 1 Wearable Platform
    • Qualcomm Snapdragon eq Snapdragon X32 5G Modem-RF System..Snapdragon X32 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon X35 5G Modem-RF System..Snapdragon X35 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon X65 5G Modem-RF System..Snapdragon X65 5G Modem-RF System
    • Qualcomm Snapdragon eq SRV1H..SRV1H
    • Qualcomm Snapdragon eq SRV1M..SRV1M
    • Qualcomm Snapdragon eq SSG2115P..SSG2115P
    • Qualcomm Snapdragon eq SSG2125P..SSG2125P
    • Qualcomm Snapdragon eq SW5100..SW5100
    • Qualcomm Snapdragon eq SW5100P..SW5100P
    • Qualcomm Snapdragon eq SXR1230P..SXR1230P
    • Qualcomm Snapdragon eq SXR2230P..SXR2230P
    • Qualcomm Snapdragon eq SXR2250P..SXR2250P
    • Qualcomm Snapdragon eq WCD9335..WCD9335
    • Qualcomm Snapdragon eq WCD9340..WCD9340
    • Qualcomm Snapdragon eq WCD9370..WCD9370
    • Qualcomm Snapdragon eq WCD9375..WCD9375
    • Qualcomm Snapdragon eq WCD9378..WCD9378
    • Qualcomm Snapdragon eq WCD9380..WCD9380
    • Qualcomm Snapdragon eq WCD9385..WCD9385
    • Qualcomm Snapdragon eq WCD9395..WCD9395
    • Qualcomm Snapdragon eq WCN3950..WCN3950
    • Qualcomm Snapdragon eq WCN3980..WCN3980
    • Qualcomm Snapdragon eq WCN3988..WCN3988
    • Qualcomm Snapdragon eq WCN6650..WCN6650
    • Qualcomm Snapdragon eq WCN6740..WCN6740
    • Qualcomm Snapdragon eq WCN6755..WCN6755
    • Qualcomm Snapdragon eq WCN7750..WCN7750
    • Qualcomm Snapdragon eq WCN7860..WCN7860
    • Qualcomm Snapdragon eq WCN7861..WCN7861
    • Qualcomm Snapdragon eq WCN7880..WCN7880
    • Qualcomm Snapdragon eq WCN7881..WCN7881
    • Qualcomm Snapdragon eq WSA8810..WSA8810
    • Qualcomm Snapdragon eq WSA8815..WSA8815
    • Qualcomm Snapdragon eq WSA8830..WSA8830
    • Qualcomm Snapdragon eq WSA8832..WSA8832
    • Qualcomm Snapdragon eq WSA8835..WSA8835
    • Qualcomm Snapdragon eq WSA8840..WSA8840
    • Qualcomm Snapdragon eq WSA8845..WSA8845
    • Qualcomm Snapdragon eq WSA8845H..WSA8845H

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

    Metrics

    7.8

    Priority

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

    Source: Vendor (CNA), CVSS v3

    7.8

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    0.1 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 0.2

    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
    51.81 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
    7.8 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
    7.8
    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
    0.2
    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
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: total
    Source: CISA Vulnrichment, as of 18 December 2025
    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-120

    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

    Memory corruption while copying packets received from unix clients.

    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
    • SA8255P
    • SRV1M
    • WSA8845
    • QCN9024
    • WCN3980
    • SA7775P
    • WCN6740
    • WCD9385
    • SA8650P
    • QCN6024
    • WSA8810
    • QCM6125
    • WCN7881
    • Snapdragon AR1 Gen 1 Platform "Luna1"
    • SA9000P
    • WSA8835
    • SSG2125P
    • Snapdragon 768G 5G Mobile Platform (SM7250-AC)
    • QAMSRV1M
    • FastConnect 6700
    • FastConnect 6900
    • QAM8775P
    • SXR2230P
    • Snapdragon AR2 Gen 1 Platform
    • SM8735
    • SDX61
    • WCN7880
    • Smart Audio 400 Platform
    • QCN9011
    • WCD9375
    • WSA8840
    • QCA2066
    • Snapdragon X32 5G Modem-RF System
    • QAM8255P
    • WCN3950
    • SM6475
    • QCA6391
    • SM7635P
    • CSRA6620
    • WSA8815
    • SM7435
    • WSA8832
    • WCD9378
    • WCD9395
    • SA6155P
    • QCA8081
    • WSA8830
    • WCN6650
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    Vendors and products

    Affected operating systems

    Affected operating systems
    Otherqualcommar8031_firmware—
    Otherqualcommar8035_firmware—
    Otherqualcommcsra6620_firmware—
    Otherqualcommcsra6640_firmware—
    Otherqualcommfastconnect_6200_firmware—
    Otherqualcommfastconnect_6700_firmware—
    Otherqualcommfastconnect_6900_firmware—
    Otherqualcommfastconnect_7800_firmware—
    Otherqualcommqam8255p_firmware—
    Otherqualcommqam8650p_firmware—
    Otherqualcommqam8775p_firmware—
    Otherqualcommqamsrv1h_firmware—
    Otherqualcommqamsrv1m_firmware—
    Otherqualcommqca2066_firmware—
    Otherqualcommqca6174a_firmware—
    Otherqualcommqca6391_firmware—
    Otherqualcommqca6574_firmware—
    Otherqualcommqca6574a_firmware—
    Otherqualcommqca6574au_firmware—
    Otherqualcommqca6595au_firmware—
    Otherqualcommqca6696_firmware—
    Otherqualcommqca8081_firmware—
    Otherqualcommqca8337_firmware—
    Otherqualcommqcm5430_firmware—

    Weakness classes (CWE)

    • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

      Base

      The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

      Entry at MITRE CWE-120

    References & sources

    • docs.qualcomm.comproduct/publicresources/securitybulletin/december-2025-bulletin…Vendor advisory
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