HIGHCVSS v3.1 8.1Vulnerability
CVE-2026-121997
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-05T18:05:53.357748+00:00
- Cvss severity
- HIGH
- Cvss score
- 8.1
- Retrieved at
- 2026-11-05T18:06:50+00:00
- Score
- 8.1
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-121997
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-11-05T17:18:01.053
- Last modified
- 2026-11-05T17:18:01.190
Related Entities (1)
HAS_WEAKNESS (1)
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