High severity7.5NVD Advisory· Published Jul 10, 2025· Updated Jun 17, 2026
CVE-2025-53020
CVE-2025-53020
Description
Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server.
This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63.
Users are recommended to upgrade to version 2.4.64, which fixes the issue.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
552.4.17 - 2.4.63+ 1 more
- (no CPE)range: 2.4.17 - 2.4.63
- (no CPE)range: 2.4.17
- osv-coords53 versionspkg:bitnami/apachepkg:rpm/almalinux/httpdpkg: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_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
>= 2.4.17, < 2.4.64+ 52 more
- (no CPE)range: >= 2.4.17, < 2.4.64
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 1.15.7-10.module_el8.10.0+4185+0955a0d7.5
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2
- (no CPE)range: < 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (no CPE)range: < 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8
- (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
Patches
Vulnerability mechanics
References
3News mentions
3- ‘HTTP/2 Bomb’ Exploit Knocks Web Servers Offline in SecondsSecurityWeek · Jun 3, 2026
- New HTTP/2 Bomb Vulnerability Allows Remote DoS on NGINX, Apache, IIS, Envoy & CloudflareThe Hacker News · Jun 3, 2026
- HTTP/2 Bomb — Remote DoS Exploit Hits nginx, Apache, IIS, Envoy, and Cloudflare PingoraCyber Security News · Jun 3, 2026