{"id":"CVE-2026-121997","published":"2026-11-05T17:18:01.053","lastModified":"2026-11-06T05:18:25.430","description":"A heap buffer overflow in gdbserver's QTDPsrc packet handler allows an unauthenticated remote attacker to achieve native code execution in the gdbserver process. The vulnerability results from a mismatch between a packet's declared source length and the actual data length, causing hex2bin to write beyond the allocated heap buffer.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-121997","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565679","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}