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Vulnerabilities

Vulnerability · CVE-2026-93543

Out-of-bounds read in libXi's XI2 class parser

Published Sep 24, 2026 · catalog updated Sep 24, 2026 · OpenBSD OpenBSD

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-93543. EPSS is 0.26%. Act only if a listed version of OpenBSD OpenBSD is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Not established
Affected products
vendor x.org libXi

CVE-2026-93543 is listed by Red Hat Enterprise Linux (libXi, libXrender, ansible-collection-redhat-leapp) und Red Hat Build of Apache Camel for Quarkus: Mehrere Schwachstellen.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor x.org libXiversion unspecified

How to fix CVE-2026-93543

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-93543. EPSS is 0.26%. Act only if a listed version of OpenBSD OpenBSD is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-125: Out-of-bounds Read. EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 24, 2026 · CVE.org

    Updated

    An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

  2. Oct 30, 2026 · BSI CERT-Bund

    Detected

    CVE-2026-93543 is listed by Red Hat Enterprise Linux (libXi, libXrender, ansible-collection-redhat-leapp) und Red Hat Build of Apache Camel for Quarkus: Mehrere Schwachstellen.

Sources

  • BSI CERT-BundGovernment advisoryCVE-2026-93543

    Red Hat Enterprise Linux (libXi, libXrender, ansible-collection-redhat-leapp) und Red Hat Build of Apache Camel for Quarkus: Mehrere Schwachstellen

    wid.cert-bund.de
  • CVE.orgVulnerability recordCVE-2026-93543

    An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

    cve.org
  • OpenBSD ErrataVendor advisoryCVE-2026-93543

    CVE-2026-93543 is named on the public OpenBSD Errata page.

    openbsd.org

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • OpenBSD ErrataNov 5, 2026
  • CVE.orgOct 31, 2026
  • BSI CERT-BundOct 31, 2026