USN-8913-1: libx11 Ubuntu

CVSS: UnknownPublished
Published 12-10-2026Last modified 12-10-2026
Open JSON

Vulnerability summary

USN-8913-1 is a vulnerability in libx11 Ubuntu with no CVSS score yet.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 4 · Downstream 0 · Related 4
CVE-2026-88806CVE-2026-94283CVE-2026-94284CVE-2026-94285

Timeline

  1. 12-10-2026
    PublishedVulnerability first disclosed.
  2. 12-10-2026
    Last modifiedVulnerability information updated.

Description

libx11 vulnerabilities Adam Bedard discovered that libx11 incorrectly handled certain XKB keyboard map replies. If a user were tricked into connecting to a malicious X server, a remote attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-88806) It was discovered that libx11 incorrectly handled certain X Input Method (XIM) messages. If a user were tricked into connecting to a malicious X server, a remote attacker could possibly use these issues to cause libx11 to crash, resulting in a denial of service. (CVE-2026-94283, CVE-2026-94284) It was discovered that libx11 incorrectly handled converting certain multibyte text. An attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service. (CVE-2026-94285)

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

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

No weakness data has been published for this record.

Affected systems

Ubuntu1 product
  • libx11< 2:1.6.2-1ubuntu2.1+esm6 | < 2:1.6.3-1ubuntu2.2+esm5 | < 2:1.6.4-3ubuntu0.4+esm3 | < 2:1.6.9-2ubuntu1.6+esm1 | < 2:1.7.5-1ubuntu0.4 | < 2:1.8.7-1ubuntu0.1 | < 2:1.8.13-1ubuntu0.1

1 vendor · 1 product

References

5 links