Dashboard / CVE-2026-121997

CVE-2026-121997

HIGH
MEDIUM Priority: 0.06 BB Relevance: 66/100
Published: 2026-11-05 Modified: 2026-11-06 First seen: 2026-11-05 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2565679
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.71%
Raw Score 0.007100
Percentile 54.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00710
2026-11-13
0.00710
2026-11-12
0.00710
2026-11-10
0.00710
2026-11-09
0.00710
2026-11-08
0.00710
2026-11-07
0.00710
2026-11-06
0.00710

Intelligence Sources

mitre ref →
nvd ref →

External Links