CVE-2026-121626 (GCVE-0-2026-121626)

Vulnerability from cvelistv5 – Published: 2026-11-03 17:13 – Updated: 2026-11-03 17:13
VLAI
Title
GNU Gatekeeper before 5.16 Out-of-Bounds Read in H.460.24 RTCP Probe Handler
Summary
GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in H46024Socket::ReceivedProbePacket() that allows remote attackers to cause a heap over-read by sending short probe packets. Attackers can send a short application-defined RTCP packet to the media port during H.460.24 probing to read past the heap allocation and possibly crash the gatekeeper.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7380 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
willamowius gnugk Affected: 0 , < 5.16 (custom)
guessed Create a notification for this product.
Date Public
2026-08-25 00:00
Credits
Tristan Madani (Talence Security) Jan Willamowius
Show details on NVD website
To clipboard 

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          "type": "finder",
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        }
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  "cveMetadata": {
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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-121626",
    "datePublished": "2026-11-03T17:13:53.309Z",
    "dateReserved": "2026-11-03T16:57:44.441Z",
    "dateUpdated": "2026-11-03T17:13:53.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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      "percentile": "0.27383"
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          }
        ],
        "id": "CVE-2026-121626",
        "lastModified": "2026-11-03T18:17:58.623",
        "metrics": {
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                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
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                "valueDensity": "NOT_DEFINED",
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}



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