{"id":"CVE-2026-121996","published":"2026-11-05T17:18:00.870","lastModified":"2026-11-05T19:17:16.407","description":"A length validation flaw in gdbserver's agent-expression parser allows an unauthenticated remote attacker to read uninitialized heap memory from the gdbserver process and cause a denial of service. Disclosed heap content includes addresses suitable for defeating ASLR in further exploitation.","cvssScore":8.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cwes":["CWE-822"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-121996","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565678","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}