CVE-2025-55753
Apache HTTP Server: mod_md (ACME), unintended retry intervals
CVE-2025-55753 is fixed in 27 products on 2 platforms, first by apache2 2.4.41-4ubuntu3.23+esm3, released December 5, 2025. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0048
41st percentile
This is a vulnerability in open source code and Apple Software is among the affected projects. The
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| macOS | |||
| Sequoia | 15.7.5 | Sequoia 15.7.5 | Mar 24, 2026 |
| Sonoma | 14.8.5 | Sonoma 14.8.5 | Mar 24, 2026 |
| Tahoe | 26.4 | Tahoe 26.4 | Mar 24, 2026 |
| Linux | |||
| apache2 · Debian 11.6 (bullseye) | 2.4.66-1~deb11u1 | DLA-4452-1 | Jan 24, 2026 |
| apache2 · Debian 12.15 (bookworm) | 2.4.66-1~deb12u1 | DEBIAN-CVE-2025-55753 | Dec 5, 2025 |
| apache2 · Debian 13.5 (trixie) | 2.4.66-1~deb13u1 | DEBIAN-CVE-2025-55753 | Dec 5, 2025 |
| apache2 · Debian 14 | 2.4.66-1 | DEBIAN-CVE-2025-55753 | Dec 5, 2025 |
| apache2 · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2 · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2 · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2 · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2 · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2 · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2 · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2 · sles 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2 · sles 15.7 | 2.4.51-150400.6.52.1 | SUSE-SU-2026:0019-1 | Jan 5, 2026 |
| apache2 · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-bin · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2-bin 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2-bin · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2-bin 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2-bin · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2-bin 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2-bin · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2-bin 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2-bin · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2-bin 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2-data · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2-data 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2-data · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2-data 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2-data · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2-data 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2-data · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2-data 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2-data · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2-data 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2-devel · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-devel · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-devel · sles 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-devel · sles 15.7 | 2.4.62-150700.4.9.1 | SUSE-SU-2025:4518-1 | Dec 23, 2025 |
| apache2-devel · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-event · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-event · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-event · sles 15.7 | 2.4.62-150700.4.9.1 | SUSE-SU-2025:4518-1 | Dec 23, 2025 |
| apache2-event · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-manual · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-manual · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-manual · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-prefork · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-prefork · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-prefork · sles 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-prefork · sles 15.7 | 2.4.62-150700.4.9.1 | SUSE-SU-2025:4518-1 | Dec 23, 2025 |
| apache2-prefork · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-suexec-custom · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2-suexec-custom 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2-suexec-custom · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2-suexec-custom 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2-suexec-custom · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2-suexec-custom 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2-suexec-custom · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2-suexec-custom 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2-suexec-custom · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2-suexec-custom 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2-suexec-pristine · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2-suexec-pristine 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2-suexec-pristine · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2-suexec-pristine 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2-suexec-pristine · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2-suexec-pristine 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2-suexec-pristine · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2-suexec-pristine 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2-suexec-pristine · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2-suexec-pristine 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2-utils · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | apache2-utils 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| apache2-utils · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | apache2-utils 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| apache2-utils · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | apache2-utils 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| apache2-utils · Ubuntu 25.10 (questing) | 2.4.64-1ubuntu3.2 | apache2-utils 2.4.64-1ubuntu3.2 | Dec 5, 2025 |
| apache2-utils · Ubuntu 26.04.1 LTS (resolute) | 2.4.66-2ubuntu1 | apache2-utils 2.4.66-2ubuntu1 | Dec 5, 2025 |
| apache2-utils · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-utils · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-utils · sles 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-utils · sles 15.7 | 2.4.62-150700.4.9.1 | SUSE-SU-2025:4518-1 | Dec 23, 2025 |
| apache2-utils · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| apache2-worker · opensuse-leap 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-worker · opensuse-leap 16.0 | 2.4.63-160000.3.1 | OPENSUSE-SU-2026:20030-1 | Jan 14, 2026 |
| apache2-worker · sles 15.6 | 2.4.58-150600.5.41.1 | SUSE-SU-2026:0020-1 | Jan 5, 2026 |
| apache2-worker · sles 15.7 | 2.4.62-150700.4.9.1 | SUSE-SU-2025:4518-1 | Dec 23, 2025 |
| apache2-worker · sles 16.0 | 2.4.63-160000.3.1 | SUSE-SU-2026:20081-1 | Jan 14, 2026 |
| httpd · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| httpd · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| httpd · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| httpd · rocky 8 | 0:2.4.37-65.module+el8.10.0+40045+6ce8579b.6 | RLSA-2025:23732 | Dec 22, 2025 |
| httpd-devel · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| httpd-devel · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| httpd-devel · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| httpd-filesystem · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| httpd-filesystem · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| httpd-filesystem · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| httpd-manual · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| httpd-manual · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| httpd-manual · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| httpd-tools · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| httpd-tools · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| httpd-tools · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| libapache2-mod-md · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | libapache2-mod-md 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| libapache2-mod-md · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | libapache2-mod-md 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| libapache2-mod-md · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | libapache2-mod-md 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 20.04 LTS (focal) | 2.4.41-4ubuntu3.23+esm3 | libapache2-mod-proxy-uwsgi 2.4.41-4ubuntu3.23+esm3 | Dec 5, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 22.04.1 LTS (jammy) | 2.4.52-1ubuntu4.18 | libapache2-mod-proxy-uwsgi 2.4.52-1ubuntu4.18 | Dec 5, 2025 |
| libapache2-mod-proxy-uwsgi · Ubuntu 24.04.5 LTS (noble) | 2.4.58-1ubuntu8.10 | libapache2-mod-proxy-uwsgi 2.4.58-1ubuntu8.10 | Dec 5, 2025 |
| mod_http2 · RHEL 8 | 0:1.15.7-10.module+el8.10.0+23369+11a81384.4 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_http2 · almalinux 8 | 1.15.7-10.module_el8.10.0+4044+ea5f78b1.4 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_http2 · ol 8 | 0:1.15.7-10.module+el8.10.0+90652+bef864ba.4 | ELSA-2025-23732 | Dec 24, 2025 |
| mod_http2 · rocky 8 | 0:1.15.7-10.module+el8.10.0+1775+6b057638 | RLSA-2025:23732 | Dec 22, 2025 |
| mod_ldap · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_ldap · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_ldap · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| mod_md · RHEL 10 | 2.4.26-3.el10_0.1 | RHSA-2026:0093 | Dec 5, 2025 |
| mod_md · RHEL 8 | 1:2.0.8-8.module+el8.10.0+23815+1b5e1c66.2 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_md · RHEL 9 | 1:2.4.26-1.el9_7.1 | RHSA-2025:23739 | Jan 16, 2026 |
| mod_md · almalinux 10 | 1:2.4.26-4.el10_1 | ALSA-2025:23738 | Dec 22, 2025 |
| mod_md · almalinux 8 | 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_md · almalinux 9 | 1:2.4.26-1.el9_7.1 | ALSA-2025:23739 | Dec 22, 2025 |
| mod_md · ol 10 | 1:2.4.26-4.el10_1 | ELSA-2025-23738 | Dec 21, 2025 |
| mod_md · ol 8 | 1:2.0.8-8.module+el8.10.0+90740+3332f30e.2 | ELSA-2025-23732 | Dec 24, 2025 |
| mod_md · ol 9 | 1:2.4.26-1.el9_7.1 | ELSA-2025-23739 | Dec 21, 2025 |
| mod_md · rocky 10 | 1:2.4.26-4.el10_1 | RLSA-2025:23738 | Dec 24, 2025 |
| mod_md · rocky 8 | 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 | RLSA-2025:23732 | Dec 22, 2025 |
| mod_md · rocky 9 | 1:2.4.26-1.el9_7.1 | RLSA-2025:23739 | Dec 23, 2025 |
| mod_proxy_html · RHEL 8 | 1:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_proxy_html · almalinux 8 | 1:2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_proxy_html · ol 8 | 1:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| mod_session · RHEL 8 | 0:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_session · almalinux 8 | 2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_session · ol 8 | 0:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
| mod_ssl · RHEL 8 | 1:2.4.37-65.module+el8.10.0+23815+1b5e1c66.7 | RHSA-2025:23732 | Jan 16, 2026 |
| mod_ssl · almalinux 8 | 1:2.4.37-65.module_el8.10.0+4088+57f011c1.7 | ALSA-2025:23732 | Dec 22, 2025 |
| mod_ssl · ol 8 | 1:2.4.37-65.0.1.module+el8.10.0+90740+3332f30e.7 | ELSA-2025-23732 | Dec 24, 2025 |
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