HighCVE-2025-21427

    Buffer Over-read in Data HLOS - LNX (CVE-2025-21427)

    Published Sources: CVE.org

    What is affected, what to do

    Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.

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

    Affected
    • Qualcomm Snapdragon eq APQ8064AU..APQ8064AU
    • Qualcomm Snapdragon eq AQT1000..AQT1000
    • 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 MSM8996AU..MSM8996AU
    • Qualcomm Snapdragon eq QAM8255P..QAM8255P
    • Qualcomm Snapdragon eq QAM8295P..QAM8295P
    • Qualcomm Snapdragon eq QAM8650P..QAM8650P
    • Qualcomm Snapdragon eq QAM8775P..QAM8775P
    • Qualcomm Snapdragon eq QCA6310..QCA6310
    • Qualcomm Snapdragon eq QCA6320..QCA6320
    • Qualcomm Snapdragon eq QCA6335..QCA6335
    • Qualcomm Snapdragon eq QCA6391..QCA6391
    • Qualcomm Snapdragon eq QCA6420..QCA6420
    • Qualcomm Snapdragon eq QCA6426..QCA6426
    • Qualcomm Snapdragon eq QCA6430..QCA6430
    • Qualcomm Snapdragon eq QCA6436..QCA6436
    • Qualcomm Snapdragon eq QCA6564..QCA6564
    • Qualcomm Snapdragon eq QCA6564A..QCA6564A
    • Qualcomm Snapdragon eq QCA6564AU..QCA6564AU
    • Qualcomm Snapdragon eq QCA6574..QCA6574
    • Qualcomm Snapdragon eq QCA6574A..QCA6574A
    • Qualcomm Snapdragon eq QCA6574AU..QCA6574AU
    • Qualcomm Snapdragon eq QCA6595..QCA6595
    • Qualcomm Snapdragon eq QCA6595AU..QCA6595AU
    • Qualcomm Snapdragon eq QCA6678AQ..QCA6678AQ
    • Qualcomm Snapdragon eq QCA6688AQ..QCA6688AQ
    • Qualcomm Snapdragon eq QCA6696..QCA6696
    • Qualcomm Snapdragon eq QCA6698AQ..QCA6698AQ
    • Qualcomm Snapdragon eq QCA6797AQ..QCA6797AQ
    • Qualcomm Snapdragon eq QCM5430..QCM5430
    • Qualcomm Snapdragon eq QCM6125..QCM6125
    • Qualcomm Snapdragon eq QCM6490..QCM6490
    • Qualcomm Snapdragon eq QCM8550..QCM8550
    • Qualcomm Snapdragon eq QCN9274..QCN9274
    • Qualcomm Snapdragon eq QCS410..QCS410
    • Qualcomm Snapdragon eq QCS4490..QCS4490
    • Qualcomm Snapdragon eq QCS5430..QCS5430
    • Qualcomm Snapdragon eq QCS610..QCS610
    • Qualcomm Snapdragon eq QCS6125..QCS6125
    • Qualcomm Snapdragon eq QCS615..QCS615
    • Qualcomm Snapdragon eq QCS6490..QCS6490
    • Qualcomm Snapdragon eq QCS8300..QCS8300
    • Qualcomm Snapdragon eq QCS8550..QCS8550
    • Qualcomm Snapdragon eq QCS9100..QCS9100
    • Qualcomm Snapdragon eq Qualcomm 205 Mobile Platform..Qualcomm 205 Mobile Platform
    • Qualcomm Snapdragon eq Qualcomm 215 Mobile Platform..Qualcomm 215 Mobile Platform
    • Qualcomm Snapdragon eq Qualcomm Video Collaboration VC1 Platform..Qualcomm Video Collaboration VC1 Platform
    • Qualcomm Snapdragon eq Qualcomm Video Collaboration VC3 Platform..Qualcomm Video Collaboration VC3 Platform
    • Qualcomm Snapdragon eq Robotics RB3 Platform..Robotics RB3 Platform
    • Qualcomm Snapdragon eq SA4150P..SA4150P
    • Qualcomm Snapdragon eq SA4155P..SA4155P
    • Qualcomm Snapdragon eq SA6145P..SA6145P
    • Qualcomm Snapdragon eq SA6150P..SA6150P
    • Qualcomm Snapdragon eq SA6155..SA6155
    • Qualcomm Snapdragon eq SA6155P..SA6155P
    • Qualcomm Snapdragon eq SA7255P..SA7255P
    • Qualcomm Snapdragon eq SA7775P..SA7775P
    • Qualcomm Snapdragon eq SA8145P..SA8145P
    • Qualcomm Snapdragon eq SA8150P..SA8150P
    • Qualcomm Snapdragon eq SA8155..SA8155
    • Qualcomm Snapdragon eq SA8155P..SA8155P
    • Qualcomm Snapdragon eq SA8195P..SA8195P
    • Qualcomm Snapdragon eq SA8255P..SA8255P
    • Qualcomm Snapdragon eq SA8295P..SA8295P
    • Qualcomm Snapdragon eq SA8620P..SA8620P
    • Qualcomm Snapdragon eq SA8650P..SA8650P
    • Qualcomm Snapdragon eq SA8775P..SA8775P
    • Qualcomm Snapdragon eq SA9000P..SA9000P
    • Qualcomm Snapdragon eq SD 8 Gen1 5G..SD 8 Gen1 5G
    • Qualcomm Snapdragon eq SD626..SD626
    • Qualcomm Snapdragon eq SD660..SD660
    • Qualcomm Snapdragon eq SD670..SD670
    • Qualcomm Snapdragon eq SD730..SD730
    • Qualcomm Snapdragon eq SD835..SD835
    • Qualcomm Snapdragon eq SD855..SD855
    • Qualcomm Snapdragon eq SD865 5G..SD865 5G
    • Qualcomm Snapdragon eq SD888..SD888
    • Qualcomm Snapdragon eq SDM429W..SDM429W
    • Qualcomm Snapdragon eq SDX55..SDX55
    • Qualcomm Snapdragon eq SG4150P..SG4150P
    • Qualcomm Snapdragon eq SM4125..SM4125
    • Qualcomm Snapdragon eq SM6250..SM6250
    • Qualcomm Snapdragon eq SM6370..SM6370
    • Qualcomm Snapdragon eq SM7315..SM7315
    • Qualcomm Snapdragon eq SM7325P..SM7325P
    • Qualcomm Snapdragon eq SM8550P..SM8550P
    • Qualcomm Snapdragon eq Smart Display 200 Platform (APQ5053-AA)..Smart Display 200 Platform (APQ5053-AA)
    • Qualcomm Snapdragon eq Snapdragon 210 Processor..Snapdragon 210 Processor
    • Qualcomm Snapdragon eq Snapdragon 212 Mobile Platform..Snapdragon 212 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 4 Gen 1 Mobile Platform..Snapdragon 4 Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 4 Gen 2 Mobile Platform..Snapdragon 4 Gen 2 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 429 Mobile Platform..Snapdragon 429 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 460 Mobile Platform..Snapdragon 460 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 625 Mobile Platform..Snapdragon 625 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 626 Mobile Platform..Snapdragon 626 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 660 Mobile Platform..Snapdragon 660 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 662 Mobile Platform..Snapdragon 662 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 670 Mobile Platform..Snapdragon 670 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 675 Mobile Platform..Snapdragon 675 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 678 Mobile Platform (SM6150-AC)..Snapdragon 678 Mobile Platform (SM6150-AC)
    • 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 695 5G Mobile Platform..Snapdragon 695 5G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 710 Mobile Platform..Snapdragon 710 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 720G Mobile Platform..Snapdragon 720G Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 730 Mobile Platform (SM7150-AA)..Snapdragon 730 Mobile Platform (SM7150-AA)
    • Qualcomm Snapdragon eq Snapdragon 730G Mobile Platform (SM7150-AB)..Snapdragon 730G Mobile Platform (SM7150-AB)
    • Qualcomm Snapdragon eq Snapdragon 732G Mobile Platform (SM7150-AC)..Snapdragon 732G Mobile Platform (SM7150-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 2 Mobile Platform..Snapdragon 8 Gen 2 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 8 Gen 3 Mobile Platform..Snapdragon 8 Gen 3 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 8+ Gen 1 Mobile Platform..Snapdragon 8+ Gen 1 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 8+ Gen 2 Mobile Platform..Snapdragon 8+ Gen 2 Mobile Platform
    • Qualcomm Snapdragon eq Snapdragon 820 Automotive Platform..Snapdragon 820 Automotive Platform
    • Qualcomm Snapdragon eq Snapdragon 835 Mobile PC Platform..Snapdragon 835 Mobile PC Platform
    • Qualcomm Snapdragon eq Snapdragon 845 Mobile Platform..Snapdragon 845 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 W5+ Gen 1 Wearable Platform..Snapdragon W5+ Gen 1 Wearable Platform
    • Qualcomm Snapdragon eq Snapdragon X50 5G Modem-RF System..Snapdragon X50 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon X55 5G Modem-RF System..Snapdragon X55 5G Modem-RF System
    • Qualcomm Snapdragon eq Snapdragon XR1 Platform..Snapdragon XR1 Platform
    • Qualcomm Snapdragon eq Snapdragon XR2 5G Platform..Snapdragon XR2 5G Platform
    • Qualcomm Snapdragon eq Snapdragon XR2+ Gen 1 Platform..Snapdragon XR2+ Gen 1 Platform
    • Qualcomm Snapdragon eq SW5100..SW5100
    • Qualcomm Snapdragon eq SW5100P..SW5100P
    • Qualcomm Snapdragon eq SXR1120..SXR1120
    • Qualcomm Snapdragon eq SXR2130..SXR2130
    • Qualcomm Snapdragon eq TalynPlus..TalynPlus
    • Qualcomm Snapdragon eq Vision Intelligence 100 Platform (APQ8053-AA)..Vision Intelligence 100 Platform (APQ8053-AA)
    • Qualcomm Snapdragon eq Vision Intelligence 200 Platform (APQ8053-AC)..Vision Intelligence 200 Platform (APQ8053-AC)
    • Qualcomm Snapdragon eq Vision Intelligence 300 Platform..Vision Intelligence 300 Platform
    • Qualcomm Snapdragon eq Vision Intelligence 400 Platform..Vision Intelligence 400 Platform
    • Qualcomm Snapdragon eq WCD9326..WCD9326
    • Qualcomm Snapdragon eq WCD9335..WCD9335
    • Qualcomm Snapdragon eq WCD9340..WCD9340
    • Qualcomm Snapdragon eq WCD9341..WCD9341
    • Qualcomm Snapdragon eq WCD9370..WCD9370
    • Qualcomm Snapdragon eq WCD9375..WCD9375
    • Qualcomm Snapdragon eq WCD9380..WCD9380
    • Qualcomm Snapdragon eq WCD9385..WCD9385
    • Qualcomm Snapdragon eq WCD9390..WCD9390
    • Qualcomm Snapdragon eq WCD9395..WCD9395
    • Qualcomm Snapdragon eq WCN3610..WCN3610
    • Qualcomm Snapdragon eq WCN3615..WCN3615
    • Qualcomm Snapdragon eq WCN3620..WCN3620
    • Qualcomm Snapdragon eq WCN3660B..WCN3660B
    • Qualcomm Snapdragon eq WCN3680B..WCN3680B
    • Qualcomm Snapdragon eq WCN3910..WCN3910
    • Qualcomm Snapdragon eq WCN3950..WCN3950
    • Qualcomm Snapdragon eq WCN3980..WCN3980
    • Qualcomm Snapdragon eq WCN3988..WCN3988
    • Qualcomm Snapdragon eq WCN3990..WCN3990
    • Qualcomm Snapdragon eq WCN6740..WCN6740
    • 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

    8.2

    Priority

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

    Source: NVD, CVSS v3

    8.2

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    0.2 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 15.7

    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
    52.76 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
    8.2 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
    8.2
    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
    0.2 %
    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
    15.7
    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
    CISA assessment (SSVC)
    Exploitation: none known · automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 8 July 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-126

    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

    Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.

    Source: cvelistv5, NVD (NIST)

    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
    • SXR1120
    • SA8255P
    • Snapdragon 782G Mobile Platform (SM7325-AF)
    • Snapdragon 710 Mobile Platform
    • Vision Intelligence 300 Platform
    • Robotics RB3 Platform
    • WSA8845
    • Snapdragon 780G 5G Mobile Platform
    • WCN3980
    • SA7775P
    • QCA6698AQ
    • WCN6740
    • WCD9385
    • SA8650P
    • SA6155
    • WSA8810
    • WCN3620
    • Snapdragon 820 Automotive Platform
    • QCA6310
    • QCM6125
    • SD835
    • Qualcomm 215 Mobile Platform
    • Snapdragon 845 Mobile Platform
    • SDM429W
    • Snapdragon 855+/860 Mobile Platform (SM8150-AC)
    • Snapdragon 855 Mobile Platform
    • SD670
    • WCD9326
    • Snapdragon 778G+ 5G Mobile Platform (SM7325-AE)
    • SA9000P
    • WSA8835
    • QCN9274
    • Smart Display 200 Platform (APQ5053-AA)
    • FastConnect 6700
    • Vision Intelligence 200 Platform (APQ8053-AC)
    • Snapdragon 730G Mobile Platform (SM7150-AB)
    • Snapdragon 660 Mobile Platform
    • FastConnect 6900
    • Snapdragon 8+ Gen 1 Mobile Platform
    • QAM8775P
    • Snapdragon XR1 Platform
    • SM8550P
    • AQT1000
    • WCD9375
    • WSA8840
    • QCS8300
    • QAM8255P
    • WCN3950
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    Vendors and products

    Affected operating systems

    Affected operating systems
    Otherqualcomm205_mobile_firmware—
    Otherqualcomm215_mobile_firmware—
    Otherqualcommapq8064au_firmware—
    Otherqualcommaqt1000_firmware—
    Otherqualcommfastconnect_6200_firmware—
    Otherqualcommfastconnect_6700_firmware—
    Otherqualcommfastconnect_6800_firmware—
    Otherqualcommfastconnect_6900_firmware—
    Otherqualcommfastconnect_7800_firmware—
    Otherqualcommmsm8996au_firmware—
    Otherqualcommqam8255p_firmware—
    Otherqualcommqam8295p_firmware—
    Otherqualcommqam8650p_firmware—
    Otherqualcommqam8775p_firmware—
    Otherqualcommqca6310_firmware—
    Otherqualcommqca6320_firmware—
    Otherqualcommqca6335_firmware—
    Otherqualcommqca6391_firmware—
    Otherqualcommqca6420_firmware—
    Otherqualcommqca6426_firmware—
    Otherqualcommqca6430_firmware—
    Otherqualcommqca6436_firmware—
    Otherqualcommqca6564_firmware—
    Otherqualcommqca6564a_firmware—

    Weakness classes (CWE)

    • CWE-126Buffer Over-read

      Variant

      The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

      Entry at MITRE CWE-126

    References & sources

    • docs.qualcomm.comproduct/publicresources/securitybulletin/july-2025-bulletin.htmlVendor advisory
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