CVE-2025-32464

haproxy: Buffer Overflow via Improper Back-Reference Replacement Length Check

Published Apr 9, 2025 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap-based buffer overflow because of mishandling of the replacement of multiple short patterns with a longer one.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-4135-1 haproxy security update
EUVD EUVD EUVD-2025-10415 HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap-based buffer overflow because of mishandling of the replacement of multiple short patterns with a longer one.
Ubuntu USN Ubuntu USN USN-7431-1 HAProxy vulnerability
Ubuntu USN Ubuntu USN USN-7431-2 HAProxy vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title haproxy: Buffer Overflow via Improper Back-Reference Replacement Length Check
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Description HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap-based buffer overflow because of mishandling of the replacement of multiple short patterns with a longer one.
Weaknesses CWE-1025
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Apr 23, 2025, 10:03 PM
Reserved
Apr 9, 2025, 12:00 AM
Status
Deferred
Published
Apr 9, 2025, 3:15 AM
Modified
Jun 17, 2026, 9:12 AM
Severity
Moderate
Public date
Apr 9, 2025, 12:00 AM