ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-49177

A flaw was found in the XFIXES extension.

Published Jun 17, 2025 · catalog updated Jun 30, 2026 · Red Hat Red Hat Enterprise Linux 9

Check this week

CVE-2025-49177 is not in CISA KEV. FIRST estimates a 43.00% chance of exploitation in the next 30 days. Check whether you run Red Hat Red Hat Enterprise Linux 9.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
43.00%
Remediation
Advisory link
Affected products
vendor Red Hat Red Hat Enterprise Linux 9 patch: 0:1.20.11-31.el9_6

A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.

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 Red Hat Red Hat Enterprise Linux 9 patch: 0:1.20.11-31.el9_6patch: 0:1.20.11-31.el9_6

How to fix CVE-2025-49177

  • Recommended remediation

    A patch or advisory reference is linked. Open the original publisher for availability by product version.

  • Official advisories

What to do

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

Should you patch?

CVE-2025-49177 is not in CISA KEV. FIRST estimates a 43.00% chance of exploitation in the next 30 days. Check whether you run Red Hat Red Hat Enterprise Linux 9.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat Enterprise Linux 9 patch: 0:1.20.11-31.el9_6 patch: 0:1.20.11-31.el9_6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 43.00%. 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. Jun 17, 2025 · EUVD

    Detected

    A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.

  2. Jun 30, 2026 · EUVD

    Updated

    A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.

Sources

  • EUVDVulnerability recordEUVD-2025-18499

    A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Jun 30, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.