HIGHCVSS v3.1 8.8Vulnerability
CVE-2026-121994
A stack buffer overflow in the GDB client's remote protocol handler allows an attacker-controlled debug target to execute arbitrary code in the GDB process. The vulnerability exists in fetch_register_using_p, which decodes a stub's register reply into an alloca-sized buffer without bounding writes by the register width.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-05T18:05:53.357748+00:00
- Cvss severity
- HIGH
- Cvss score
- 8.8
- Retrieved at
- 2026-11-05T18:06:50+00:00
- Score
- 8.8
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-121994
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-05T18:02:03+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published at
- 2026-11-05T17:18:00.503
- Last modified
- 2026-11-05T17:18:00.640
Related Entities (1)
HAS_WEAKNESS (1)
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