{"id":"CVE-2026-121626","published":"2026-11-03T18:17:58.623","lastModified":"2026-11-03T18:17:58.623","description":"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.","cvssScore":3.7,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://github.com/willamowius/gnugk","tags":[]},{"url":"https://github.com/willamowius/gnugk/blob/v5_15/GkClient.cxx#L963-L990","tags":[]},{"url":"https://github.com/willamowius/gnugk/commit/160aa27344ecc9a443cccaa63e8d7fa95a766610","tags":[]},{"url":"https://github.com/willamowius/gnugk/releases/tag/v5_16","tags":[]},{"url":"https://www.vulncheck.com/advisories/gnu-gatekeeper-before-5.16-out-of-bounds-read-in-h-460.24-rtcp-probe-handler","tags":[]}],"exploitRefs":[{"url":"https://github.com/willamowius/gnugk","tags":[]},{"url":"https://github.com/willamowius/gnugk/blob/v5_15/GkClient.cxx#L963-L990","tags":[]},{"url":"https://github.com/willamowius/gnugk/commit/160aa27344ecc9a443cccaa63e8d7fa95a766610","tags":[]},{"url":"https://github.com/willamowius/gnugk/releases/tag/v5_16","tags":[]}],"hasPoc":true,"ai":null}