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Vulnerability Details :

CVE-2025-49506

Summary
Assigner-apache
Assigner Org ID-f0158376-9dc2-43b6-827c-5f631a4d8d09
Published At-06 Aug, 2026 | 14:33
Updated At-06 Aug, 2026 | 14:33
Rejected At-
Credits

Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:apache
Assigner Org ID:f0158376-9dc2-43b6-827c-5f631a4d8d09
Published At:06 Aug, 2026 | 14:33
Updated At:06 Aug, 2026 | 14:33
Rejected At:
▼CVE Numbering Authority (CNA)
Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack

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.

Affected Products
Vendor
The Apache Software FoundationApache Software Foundation
Product
Apache Portable Runtime Utility
Package Name
APR-util
Default Status
unaffected
Versions
Affected
  • From 1.2.0 through 1.6.3 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-208CWE-208 Observable Timing Discrepancy
Type: CWE
CWE ID: CWE-208
Description: CWE-208 Observable Timing Discrepancy
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Textual description of severity
text:
low
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

finder
Michael Rowley <michael csirt.global>
Timeline
EventDate
Reported to security team2024-06-03 00:00:00
fixed in 1.6.x by r19368052026-08-06 12:00:00
1.6.4 released2026-08-06 12:58:00
Event: Reported to security team
Date: 2024-06-03 00:00:00
Event: fixed in 1.6.x by r1936805
Date: 2026-08-06 12:00:00
Event: 1.6.4 released
Date: 2026-08-06 12:58:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://lists.apache.org/thread/2v8o3bj9pb7lfcr57bdnjg9xfkj04mg5
vendor-advisory
Hyperlink: https://lists.apache.org/thread/2v8o3bj9pb7lfcr57bdnjg9xfkj04mg5
Resource:
vendor-advisory
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@apache.org
Published At:06 Aug, 2026 | 15:16
Updated At:06 Aug, 2026 | 15:46

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-208Primarysecurity@apache.org
CWE ID: CWE-208
Type: Primary
Source: security@apache.org
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://lists.apache.org/thread/2v8o3bj9pb7lfcr57bdnjg9xfkj04mg5security@apache.org
N/A
Hyperlink: https://lists.apache.org/thread/2v8o3bj9pb7lfcr57bdnjg9xfkj04mg5
Source: security@apache.org
Resource: N/A

Change History

0
Information is not available yet

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