Cyber Resilience

CVE-2023-6478

High

Published: 13 December 2023

Published
13 December 2023
Modified
04 August 2025
KEV Added
—
Patch
—
CVSS Score v3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
EPSS Score 0.0121 79.4th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6478 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 7.6 (High).

Operationally, ranked in the top 20.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.

CWE(s)
CWE-190

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

x.org
x server
≤ 21.1.10
x.org
xwayland
≤ 23.2.3
redhat
enterprise linux eus
9.2
debian
debian linux
10.0, 11.0, 12.0
tigervnc
tigervnc
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References