7.3

CVE-2025-62229: x.org xwayland Use After Free

CVSS: 7.3v3.1HighDeferred
AliasesUBUNTU-CVE-2025-62229DEBIAN-CVE-2025-62229
Published 30-10-2025Last modified 20-04-2026
Open JSON

Vulnerability summary

CVE-2025-62229 is a high (CVSS 7.3) Use After Free vulnerability in x.org xwayland. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.1% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.51%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 14
DLA-4353-1DSA-6044-1MGASA-2025-0263OPENSUSE-SU-2025:15683-1OPENSUSE-SU-2025:15684-1OPENSUSE-SU-2025:20099-1

Timeline

  1. 30-10-2025
    PublishedVulnerability first disclosed.
  2. 20-04-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

+0.03 pp

From 0.47% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu4 products
  • xorg-serverAll versions (No fix recorded) | < 2:21.1.4-2ubuntu1.7~22.04.16 | < 2:21.1.12-1ubuntu1.5 | < 2:21.1.18-1ubuntu1.1 | < 2:21.1.21-1ubuntu1
  • xorg-server-hwe-16.04All versions (No fix recorded)
  • xorg-server-hwe-18.04All versions (No fix recorded)
  • xwayland< 2:22.1.1-1ubuntu0.20 | < 2:23.2.6-1ubuntu0.7 | < 2:24.1.6-1ubuntu1.1 | < 2:24.1.9-1
Debian2 products
  • xorg-server< 2:21.1.7-3+deb12u11 | < 2:21.1.16-1.3+deb13u1 | < 2:21.1.20-1
  • xwaylandAll versions (No fix recorded) | < 2:24.1.9-1
X.org1 product

3 vendors · 7 products

References

43 links
Show all 43 references