HIGH 8.1 NVD
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
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.
References
- https://access.redhat.com/security/cve/CVE-2026-121997
- https://bugzilla.redhat.com/show_bug.cgi?id=2565679
This high severity vulnerability with a CVSS score of 8.1 was published on 2026-11-05 via NVD.
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