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CVE-2025-23419VulnerabilityPublished Updated

SUSE nginx · security update for nginx

Affects SUSE nginxSource GCVE Database

0
Authoritative record:CVE-2025-23419· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium : upgrade the Red Hat redhat/nginx package to 9.6 when convenient.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.7% chance of exploitation in 30 days – higher than 86% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade the Red Hat redhat/nginx package to 9.6.

Affected software

ProductAffectedFixed in
Red Hatredhat/nginxpkg:rpm/redhat/nginxOther threatsAffected
  • <9.6
  • <=9.8
Fixed in
  • 9.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and users are advised to update to the fixed versions provided by Red Hat. Refer to the Red Hat advisory RHSA-2025:7331 and the update instructions at https://access.redhat.com/articles/11258 for applying the security update. No additional mitigation steps are indicated beyond applying the official patch.

Description

A vulnerability in nginx allows bypassing client certificate authentication when multiple server blocks share the same IP address and port using TLS session resumption. This occurs if TLS Session Tickets or SSL session cache are used in the default server performing client certificate authentication. The issue has a moderate security impact and affects multiple nginx versions. A patch is available from Red Hat and users are advised to update to fixed versions.

References

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