{"id":"CVE-2026-121625","published":"2026-11-03T18:17:58.440","lastModified":"2026-11-03T18:17:58.440","description":"GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in ParseRTCP() in ProxyChannel.cxx that allows remote RTP peers to read heap memory past received packets. Attackers can send RTCP SDES items lacking a NUL byte to the media proxy port during proxied H.323 calls with EnableRTCPStats enabled, crashing 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/ProxyChannel.cxx#L14867-L14895","tags":[]},{"url":"https://github.com/willamowius/gnugk/commit/e8939d03b0b2ef46e356f3144a6ee14f2920b777","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-via-rtcp-sdes-parsing","tags":[]}],"exploitRefs":[{"url":"https://github.com/willamowius/gnugk","tags":[]},{"url":"https://github.com/willamowius/gnugk/blob/v5_15/ProxyChannel.cxx#L14867-L14895","tags":[]},{"url":"https://github.com/willamowius/gnugk/commit/e8939d03b0b2ef46e356f3144a6ee14f2920b777","tags":[]},{"url":"https://github.com/willamowius/gnugk/releases/tag/v5_16","tags":[]}],"hasPoc":true,"ai":null}