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

Vulnerability from cvelistv5 – Published: 2026-11-03 17:13 – Updated: 2026-11-07 03:19

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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-07 03:19 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck CNA

References

5 references

URL	Tags
https://github.com/willamowius/gnugk/commit/160aa…	patch
https://github.com/willamowius/gnugk/releases/tag/v5_16	release-notes
https://github.com/willamowius/gnugk/blob/v5_15/G…	technical-description
https://github.com/willamowius/gnugk	product
https://www.vulncheck.com/advisories/gnu-gatekeep…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
willamowius	gnugk	Affected: 0 , < 5.16 (custom)

Date Public

2026-08-25 00:00

Credits

Tristan Madani (Talence Security) Jan Willamowius

Show details on NVD website

JSON

To clipboard

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CVE-2026-121625 (GCVE-0-2026-121625)

Vulnerability from cvelistv5 – Published: 2026-11-03 17:13 – Updated: 2026-11-03 17:24