CVE catalog
CVE-2025-49506
APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timin
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.38% · Oct 25, 2026
APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timing attack particularly on platforms without crypt() such as Windows, BeOS, NetWare, or Android. Users are recommended to upgrade to version 1.6.4, which fixes this issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | apr-util | sid | 1.6.4-2 | fixed |
| Debian | apr-util | forky | 1.6.4-2 | fixed |
| Debian | apr-util | trixie | 1.6.3-3+deb13u1 | fixed |
| Debian | apr-util | trixie-security | 1.6.3-3+deb13u1 | fixed |
| Debian | apr-util | bookworm | 1.6.3-1 | vulnerable |
| Debian | apr-util | bookworm-security | 1.6.3-1+deb12u1 | fixed |
| Ubuntu | apr-util | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-dbd-mysql | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-dbd-odbc | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-dbd-pgsql | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-dbd-sqlite3 | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-dev | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1-ldap | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | libaprutil1t64 | noble | 1.6.3-1.1ubuntu7.1 | fixed |
| Cpe | apr-util | Not reported | 1.6.4 | fixed |
| Suse | apr-util | linux enterprise server 16.0 | 1.6.3-160000.3.1 | fixed |
| Suse | apr-util | linux enterprise server for sap applications 16.0 | 1.6.3-160000.3.1 | fixed |
| Suse | libapr-util1 | linux enterprise server 12 sp5-ltss | 1.5.3-8.22.1 | fixed |
| Suse | libapr-util1 | linux enterprise server ltss extended security 12 sp5 | 1.5.3-8.22.1 | fixed |
| Ubuntu | apr-util | pro | 1.6.1-4build1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.2 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.2+esm1 | fixed |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu2 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu3 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.1 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.2 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.3 | fixed |
| Ubuntu | apr-util | 24.04 | 1.6.3-1ubuntu1 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu5 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu6 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu7 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu2 | vulnerable |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu3 | vulnerable |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu3.1 | fixed |
| Ubuntu | apr-util | pro | 1.6.1-4build1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.1 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.2 | vulnerable |
| Ubuntu | apr-util | pro | 1.6.1-4ubuntu2.2+esm1 | fixed |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu2 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu3 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.1 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.2 | vulnerable |
| Ubuntu | apr-util | 22.04 | 1.6.1-5ubuntu4.22.04.3 | fixed |
| Ubuntu | apr-util | 24.04 | 1.6.3-1ubuntu1 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu5 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu6 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu7 | vulnerable |
| Ubuntu | apr-util | 24.04 | 1.6.3-1.1ubuntu7.1 | fixed |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu2 | vulnerable |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu3 | vulnerable |
| Ubuntu | apr-util | 26.04 | 1.6.3-3ubuntu3.1 | fixed |
| Opensuse | apr-util | leap 16.0 | 1.6.3-160000.3.1 | fixed |
| Alpine | apr-util | 3.21 | 1.6.4-r0 | fixed |
| Alpine | apr-util | 3.22 | 1.6.4-r0 | fixed |
| Alpine | apr-util | 3.23 | 1.6.4-r0 | fixed |
| Alpine | apr-util | 3.24 | 1.6.4-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | apr-util | source | sid | 1.6.4-1 | not yet assigned | Not reported | [1143837] |
| Debian | apr-util | source | forky | 1.6.4-1 | not yet assigned | Not reported | [1143837] |
| Debian | apr-util | source | trixie | 1.6.3-3+deb13u1 | not yet assigned | Not reported | [1143837] |
| Debian | apr-util | source | bookworm | 1.6.3-1+deb12u1 | not yet assigned | Not reported | [1143837] |
| Ubuntu | apr-util | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-dbd-mysql | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-dbd-odbc | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-dbd-pgsql | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-dbd-sqlite3 | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-dev | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1-ldap | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Ubuntu | libaprutil1t64 | deb | noble | 1.6.3-1.1ubuntu7.1 | Not reported | Not reported | Not reported |
| Cpe | apr-util | cpe | Not reported | 1.6.4 | Not reported | NVD-CVE-2025-49506 | Not reported |
| Suse | apr-util | rpm | linux enterprise server 16.0 | 1.6.3-160000.3.1 | Not reported | SUSE-SU-2026:23551-1 | Not reported |
| Suse | apr-util | rpm | linux enterprise server for sap applications 16.0 | 1.6.3-160000.3.1 | Not reported | SUSE-SU-2026:23551-1 | Not reported |
| Suse | libapr-util1 | rpm | linux enterprise server 12 sp5-ltss | 1.5.3-8.22.1 | Not reported | SUSE-SU-2026:3905-1 | Not reported |
| Suse | libapr-util1 | rpm | linux enterprise server ltss extended security 12 sp5 | 1.5.3-8.22.1 | Not reported | SUSE-SU-2026:3905-1 | Not reported |
| Ubuntu | apr-util | deb | pro | 1.6.1-4ubuntu2.2+esm1 | Not reported | USN-8719-1 | Not reported |
| Ubuntu | apr-util | deb | 22.04 | 1.6.1-5ubuntu4.22.04.3 | Not reported | USN-8719-1 | Not reported |
| Ubuntu | apr-util | deb | 24.04 | 1.6.3-1.1ubuntu7.1 | Not reported | USN-8719-1 | Not reported |
| Ubuntu | apr-util | deb | 26.04 | 1.6.3-3ubuntu3.1 | Not reported | USN-8719-1 | Not reported |
| Ubuntu | apr-util | deb | pro | 1.6.1-4ubuntu2.2+esm1 | Not reported | UBUNTU-CVE-2025-49506 | Not reported |
| Ubuntu | apr-util | deb | 22.04 | 1.6.1-5ubuntu4.22.04.3 | Not reported | UBUNTU-CVE-2025-49506 | Not reported |
| Ubuntu | apr-util | deb | 24.04 | 1.6.3-1.1ubuntu7.1 | Not reported | UBUNTU-CVE-2025-49506 | Not reported |
| Ubuntu | apr-util | deb | 26.04 | 1.6.3-3ubuntu3.1 | Not reported | UBUNTU-CVE-2025-49506 | Not reported |
| Opensuse | apr-util | rpm | leap 16.0 | 1.6.3-160000.3.1 | Not reported | OPENSUSE-SU-2026:21672-1 | Not reported |
| Alpine | apr-util | apk | 3.21 | 1.6.4-r0 | Not reported | ALPINE-CVE-2025-49506 | Not reported |
| Alpine | apr-util | apk | 3.22 | 1.6.4-r0 | Not reported | ALPINE-CVE-2025-49506 | Not reported |
| Alpine | apr-util | apk | 3.23 | 1.6.4-r0 | Not reported | ALPINE-CVE-2025-49506 | Not reported |
| Alpine | apr-util | apk | 3.24 | 1.6.4-r0 | Not reported | ALPINE-CVE-2025-49506 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libaprutil1]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-dbd-mysql]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-dbd-odbc]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-dbd-pgsql]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-dbd-sqlite3]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-dev]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
- [libaprutil1-ldap]Affected
Source package: [apr-util]
Details (4)
1.6.3-1· amd64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1· arm64 · bookwormAffected · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
1.6.3-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.6.3-1+deb12u1nvd · apr-util · debian · bookworm; nvd · apr-util · debian · 12
[Debian 13 (Trixie)]
- [libaprutil1-dbd-mysql]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1-dbd-odbc]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1-dbd-pgsql]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1-dbd-sqlite3]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1-dev]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1-ldap]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
- [libaprutil1t64]Affected
Source package: [apr-util]
Details (4)
1.6.3-3+b1· amd64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+b1· arm64 · trixieAffected · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
1.6.3-3+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.6.3-3+deb13u1nvd · apr-util · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21672-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2025-49506]
- [https://osv.dev/vulnerability/ALPINE-CVE-2025-49506]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-49506]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23551-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3905-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-49506]
- [https://osv.dev/vulnerability/USN-8719-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21672-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-49506]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-49506.json]
- [https://ubuntu.com/security/notices/USN-8719-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2697.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]