CVE-2026-121995
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Nov 05, 2026
Vendor
unknown
Description
A stack buffer overflow in the GDB client's tracepoint upload handler allows an attacker-controlled debug stub to corrupt stack memory automatically during connection setup. The overflow results from GDB reading beyond the current reply boundary into a stale prior reply in the shared packet buffer.