Dashboard / CVE-2023-6478

CVE-2023-6478

HIGH
MEDIUM Priority: 0.12 BB Relevance: 66/100
Published: 2023-12-13 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

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.

Weakness Classification (1)

Affected Software (7)

VendorProductVersion
debian debian_linux 10.0
debian debian_linux 11.0
debian debian_linux 12.0
redhat enterprise_linux_eus 9.2
tigervnc tigervnc -
x.org x_server < 21.1.10
x.org xwayland < 23.2.3

References & Advisories (28)

Showing 25 of 28 references

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.6 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

EPSS — Exploitation Probability

1.62%
Raw Score 0.016170
Percentile 76.2%
Date 2026-11-09

EPSS Trend

2026-11-09
0.01617
2026-11-08
0.01617
2026-11-07
0.01617
2026-11-06
0.01617
2026-11-05
0.01617
2026-11-04
0.01617

Intelligence Sources

mitre ref →
nvd ref →

External Links