Critical severity9.1NVD Advisory· Published Jul 10, 2025· Updated Jun 17, 2026
CVE-2025-23048
CVE-2025-23048
Description
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption.
Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
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Affected products
76- Range: 2.4.35 - 2.4.63
- osv-coords73 versionspkg:apk/chainguard/apache2pkg:apk/chainguard/apache2-compatpkg:apk/chainguard/apache2-configpkg:apk/chainguard/apache2-config-compatpkg:apk/chainguard/apache2-datapkg:apk/chainguard/apache2-devpkg:apk/chainguard/apache2-docpkg:apk/chainguard/apache2-oci-entrypointpkg:apk/chainguard/apache2-utilspkg:apk/wolfi/apache2pkg:apk/wolfi/apache2-compatpkg:apk/wolfi/apache2-configpkg:apk/wolfi/apache2-config-compatpkg:apk/wolfi/apache2-datapkg:apk/wolfi/apache2-devpkg:apk/wolfi/apache2-docpkg:apk/wolfi/apache2-oci-entrypointpkg:apk/wolfi/apache2-utilspkg:bitnami/apachepkg:rpm/almalinux/httpdpkg:rpm/almalinux/httpd-corepkg:rpm/almalinux/httpd-develpkg:rpm/almalinux/httpd-filesystempkg:rpm/almalinux/httpd-manualpkg:rpm/almalinux/httpd-toolspkg:rpm/almalinux/mod_http2pkg:rpm/almalinux/mod_ldappkg:rpm/almalinux/mod_luapkg:rpm/almalinux/mod_mdpkg:rpm/almalinux/mod_proxy_htmlpkg:rpm/almalinux/mod_sessionpkg:rpm/almalinux/mod_sslpkg:rpm/opensuse/apache2-devel&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/apache2-event&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2-manual&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2-prefork&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2-utils&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/apache2-worker&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/apache2-devel&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2-devel&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/apache2&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/apache2&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/apache2&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/apache2-event&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6pkg:rpm/suse/apache2-event&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/apache2-prefork&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/apache2-prefork&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/apache2-tls13&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/apache2-tls13&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/apache2-utils&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2-utils&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/apache2-worker&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2-worker&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7
< 0+ 72 more
- (no CPE)range: < 0
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- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: >= 2.4.35, < 2.4.64
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 1.15.7-10.module_el8.10.0+4044+ea5f78b1.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- (no CPE)range: < 1:2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.62-4.el9_6.4
- (no CPE)range: < 1:2.4.62-4.el9_6.4
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.64-1.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- (no CPE)range: < 2.4.51-150200.3.82.1
- (no CPE)range: < 2.4.51-150200.3.82.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-35.69.1
- (no CPE)range: < 2.4.51-150200.3.82.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150200.3.82.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-35.69.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.51-150400.6.46.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- (no CPE)range: < 2.4.51-35.69.1
- (no CPE)range: < 2.4.51-35.69.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- (no CPE)range: < 2.4.58-150600.5.35.1
- (no CPE)range: < 2.4.62-150700.4.3.1
- Range: 2.4.35
Patches
Vulnerability mechanics
References
4News mentions
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