Improper Authentication Affecting apache2-utils package, versions <2.4.66-160000.1.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.51% (41st percentile)

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  • Snyk IDSNYK-SLES1600-APACHE2UTILS-17125393
  • published2 Jun 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2025-49812  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 apache2-utils to version 2.4.66-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2-utils package and not the apache2-utils package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.

Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.

CVSS Base Scores

version 3.1