CVE-2023-43785

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 36/100
Published: 2023-10-10 Modified: 2026-11-07 First seen: 2026-11-07 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.

Affected Software (5)

VendorProductVersion
— — 0 < 1.8.7
fedoraproject fedora 38
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
x.org libx11 < 1.8.7

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.67%
Raw Score 0.006690
Percentile 52.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00669
2026-11-12
0.00669
2026-11-10
0.00669
2026-11-09
0.00669
2026-11-08
0.00669
2026-11-07
0.00669
2026-11-06
0.00669

Intelligence Sources

mitre ref →
nvd ref →