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Fencer Vulns
medium 5.6

CVE-2025-47256 json

Libxmp through 4.6.2 has a stack-based buffer overflow in depack_pha in loaders/prowizard/pha.c via a malformed Pha format tracker module i…

published 2025-05-06 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-13638

cvss
5.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Libxmp through 4.6.2 has a stack-based buffer overflow in depack_pha in loaders/prowizard/pha.c via a malformed Pha format tracker module in a .mod file.

Patch / fix

  • libxmp Debian 14, Debian 13 4.6.2-2

debian advisories DEBIAN-CVE-2025-47256

  • libxmp openSUSE Tumbleweed 4.6.3-1.1

opensuse advisories openSUSE-SU-2025:15081-1

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-2025-47256 updated cvss 5.6

libxmp: stack-based buffer overflow via a malformed Pha format tracker module

  • Red Hat All currently supported Red Hat products
    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
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.6 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Affected products

  • Libxmp Libxmp

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)

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.