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CVE-2025-53020

CVE-2025-53020 · Apache HTTP Server: HTTP/2 DoS by Memory Increase

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 5.0% · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • apache httpd

    Versions
    • ≥ 2.4.17, ≤ 2.4.63: Affected (semver)

    No fix published

  • apache2 Debian:12

    Versions
    • 2.4.57-2
    • 2.4.57-3
    • 2.4.58-1
    • 2.4.59-1
    • 2.4.59-1~deb10u1
    • 2.4.59-1~deb11u1
    • 2.4.59-1~deb12u1
    • 2.4.59-2
    • 2.4.60-1
    • 2.4.61-1
    • 2.4.61-1~deb11u1
    • 2.4.61-1~deb12u1
    • 2.4.62-1
    • 2.4.62-1~deb11u1
    • 2.4.62-1~deb11u2
    • 2.4.62-1~deb12u1
    • 2.4.62-1~deb12u2
    • 2.4.62-2
    • 2.4.62-3
    • 2.4.62-4
    • 2.4.62-5
    • 2.4.62-6
    • 2.4.63-1
    • 2.4.64-1
    • 2.4.65-1~deb11u1
    Affected ranges
    • ECOSYSTEM: < 2.4.65-1~deb12u1

    Update to 2.4.65-1~deb12u1

  • apache2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.4.64-1

    Update to 2.4.64-1

  • apache2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.4.64-1

    Update to 2.4.64-1

  • apache2 Ubuntu:Pro:16.04:LTS

    Versions
    • 2.4.12-2ubuntu2
    • 2.4.17-1ubuntu1
    • 2.4.17-2ubuntu1
    • 2.4.17-3ubuntu1
    • 2.4.18-1ubuntu1
    • 2.4.18-2ubuntu1
    • 2.4.18-2ubuntu2
    • 2.4.18-2ubuntu3
    • 2.4.18-2ubuntu3.1
    • 2.4.18-2ubuntu3.2
    • 2.4.18-2ubuntu3.3
    • 2.4.18-2ubuntu3.4
    • 2.4.18-2ubuntu3.5
    • 2.4.18-2ubuntu3.7
    • 2.4.18-2ubuntu3.8
    • 2.4.18-2ubuntu3.9
    • 2.4.18-2ubuntu3.10
    • 2.4.18-2ubuntu3.12
    • 2.4.18-2ubuntu3.13
    • 2.4.18-2ubuntu3.14
    • 2.4.18-2ubuntu3.15
    • 2.4.18-2ubuntu3.17
    • 2.4.18-2ubuntu3.17+esm1
    • 2.4.18-2ubuntu3.17+esm2
    • 2.4.18-2ubuntu3.17+esm3
    • 2.4.18-2ubuntu3.17+esm4
    • 2.4.18-2ubuntu3.17+esm5
    • 2.4.18-2ubuntu3.17+esm6
    • 2.4.18-2ubuntu3.17+esm7
    • 2.4.18-2ubuntu3.17+esm8
    • 2.4.18-2ubuntu3.17+esm9
    • 2.4.18-2ubuntu3.17+esm10
    • 2.4.18-2ubuntu3.17+esm11
    • 2.4.18-2ubuntu3.17+esm12
    • 2.4.18-2ubuntu3.17+esm13
    • 2.4.18-2ubuntu3.17+esm14
    Affected ranges
    • ECOSYSTEM: < 2.4.18-2ubuntu3.17+esm16

    Update to 2.4.18-2ubuntu3.17+esm16

  • apache2 Ubuntu:Pro:18.04:LTS

    Versions
    • 2.4.27-2ubuntu3
    • 2.4.29-1ubuntu1
    • 2.4.29-1ubuntu2
    • 2.4.29-1ubuntu3
    • 2.4.29-1ubuntu4
    • 2.4.29-1ubuntu4.1
    • 2.4.29-1ubuntu4.2
    • 2.4.29-1ubuntu4.3
    • 2.4.29-1ubuntu4.4
    • 2.4.29-1ubuntu4.5
    • 2.4.29-1ubuntu4.6
    • 2.4.29-1ubuntu4.7
    • 2.4.29-1ubuntu4.8
    • 2.4.29-1ubuntu4.10
    • 2.4.29-1ubuntu4.11
    • 2.4.29-1ubuntu4.12
    • 2.4.29-1ubuntu4.13
    • 2.4.29-1ubuntu4.14
    • 2.4.29-1ubuntu4.16
    • 2.4.29-1ubuntu4.17
    • 2.4.29-1ubuntu4.18
    • 2.4.29-1ubuntu4.19
    • 2.4.29-1ubuntu4.20
    • 2.4.29-1ubuntu4.21
    • 2.4.29-1ubuntu4.22
    • 2.4.29-1ubuntu4.23
    • 2.4.29-1ubuntu4.24
    • 2.4.29-1ubuntu4.25
    • 2.4.29-1ubuntu4.26
    • 2.4.29-1ubuntu4.27
    • 2.4.29-1ubuntu4.27+esm1
    • 2.4.29-1ubuntu4.27+esm2
    • 2.4.29-1ubuntu4.27+esm3
    • 2.4.29-1ubuntu4.27+esm4
    Affected ranges
    • ECOSYSTEM: < 2.4.29-1ubuntu4.27+esm6

    Update to 2.4.29-1ubuntu4.27+esm6

  • apache2 Ubuntu:Pro:20.04:LTS

    Versions
    • 2.4.41-1ubuntu1
    • 2.4.41-4ubuntu1
    • 2.4.41-4ubuntu2
    • 2.4.41-4ubuntu3
    • 2.4.41-4ubuntu3.1
    • 2.4.41-4ubuntu3.3
    • 2.4.41-4ubuntu3.4
    • 2.4.41-4ubuntu3.5
    • 2.4.41-4ubuntu3.6
    • 2.4.41-4ubuntu3.7
    • 2.4.41-4ubuntu3.8
    • 2.4.41-4ubuntu3.9
    • 2.4.41-4ubuntu3.10
    • 2.4.41-4ubuntu3.11
    • 2.4.41-4ubuntu3.12
    • 2.4.41-4ubuntu3.13
    • 2.4.41-4ubuntu3.14
    • 2.4.41-4ubuntu3.15
    • 2.4.41-4ubuntu3.16
    • 2.4.41-4ubuntu3.17
    • 2.4.41-4ubuntu3.19
    • 2.4.41-4ubuntu3.20
    • 2.4.41-4ubuntu3.21
    • 2.4.41-4ubuntu3.23
    Affected ranges
    • ECOSYSTEM: < 2.4.41-4ubuntu3.23+esm2

    Update to 2.4.41-4ubuntu3.23+esm2

  • apache2 Ubuntu:22.04:LTS

    Versions
    • 2.4.48-3.1ubuntu3
    • 2.4.48-3.1ubuntu4
    • 2.4.51-2ubuntu1
    • 2.4.52-1ubuntu1
    • 2.4.52-1ubuntu2
    • 2.4.52-1ubuntu4
    • 2.4.52-1ubuntu4.1
    • 2.4.52-1ubuntu4.2
    • 2.4.52-1ubuntu4.3
    • 2.4.52-1ubuntu4.4
    • 2.4.52-1ubuntu4.5
    • 2.4.52-1ubuntu4.6
    • 2.4.52-1ubuntu4.7
    • 2.4.52-1ubuntu4.8
    • 2.4.52-1ubuntu4.9
    • 2.4.52-1ubuntu4.10
    • 2.4.52-1ubuntu4.11
    • 2.4.52-1ubuntu4.12
    • 2.4.52-1ubuntu4.13
    • 2.4.52-1ubuntu4.14
    Affected ranges
    • ECOSYSTEM: < 2.4.52-1ubuntu4.15

    Update to 2.4.52-1ubuntu4.15

  • apache2 Ubuntu:24.04:LTS

    Versions
    • 2.4.57-2ubuntu2
    • 2.4.57-2ubuntu3
    • 2.4.58-1ubuntu1
    • 2.4.58-1ubuntu2
    • 2.4.58-1ubuntu6
    • 2.4.58-1ubuntu7
    • 2.4.58-1ubuntu8
    • 2.4.58-1ubuntu8.1
    • 2.4.58-1ubuntu8.2
    • 2.4.58-1ubuntu8.3
    • 2.4.58-1ubuntu8.4
    • 2.4.58-1ubuntu8.5
    • 2.4.58-1ubuntu8.6
    Affected ranges
    • ECOSYSTEM: < 2.4.58-1ubuntu8.7

    Update to 2.4.58-1ubuntu8.7

Original sources

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