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Fencer Vulns
medium 6.8

CVE-2025-32464 json

HAProxy 2.2 through 3.1.6, in certain uncommon configurations, has a sample_conv_regsub heap-based buffer overflow because of mishandling o…

published 2025-04-09 19 mo ago modified 2026-06-17 4 mo ago also BIT-haproxy-2025-32464 , EUVD-2025-10415

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami haproxy 2.9.6, 3.1.7
  • haproxy haproxy 2.2.34, 2.4.29, 2.6.22, 2.8.15, 3.0.10, 3.1.7
  • haproxy Debian 12 2.6.12-1+deb12u2
  • haproxy Debian 14, Debian 13 3.0.10-1

debian advisories DEBIAN-CVE-2025-32464

  • haproxy Ubuntu 22.04 LTS 2.4.24-0ubuntu0.22.04.2
  • haproxy Ubuntu 24.04 LTS 2.8.5-1ubuntu3.3

ubuntu advisories UBUNTU-CVE-2025-32464

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • haproxy SLE Micro 5.5, SLE Micro 5.4, SLE Micro 5.3 +2 more 2.4.22+git0.f8e3218e2-150400.3.22.1
  • haproxy SLE High Availability Extension 15 SP6, openSUSE Leap 15.6 2.8.11+git0.01c1056a4-150600.3.6.1

suse advisories SUSE-SU-2025:1338-1SUSE-SU-2025:1264-1

  • haproxy openSUSE Tumbleweed 3.2.0+git0.e134140d2-2.1

opensuse advisories openSUSE-SU-2025:15200-1

  • haproxy Azure Linux 3.0 2.9.11-3

azure linux advisories AZL-59712

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-32464 updated cvss 6.8

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

  • Red Hat Ceph Storage 5 haproxy, haproxy22
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 7 haproxy
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 haproxy Red Hat Enterprise Linux 10 haproxy Red Hat OpenShift Container Platform 4 haproxy, haproxy18, haproxy20, haproxy22, haproxy26, haproxy28
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 8 haproxy
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
OSV 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami haproxy
>=2.2.0, <2.9.6
>=3.0.0, <3.1.7
2.9.6
3.1.7

Affected products

  • HAProxy HAProxy

Classification

Weakness
  • CWE-1025 Comparison Using Wrong Factors

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.