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Fencer Vulns
low 2.9

CVE-2025-43963 json

In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp allows out-of-buffer...

published 2025-04-20 18 mo ago modified 2026-08-03 3 mo ago also EUVD-2025-11960 , GHSA-3w5w-m35v-rfp7 , JLSEC-2026-1111

cvss
2.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

In LibRaw before 0.21.4, phase_one_correct in decoders/load_mfbacks.cpp allows out-of-buffer access because split_col and split_row values are not checked in 0x041f tag processing.

Patch / fix

  • julia LibRaw_jll 0.22.1+0
  • LibRaw LibRaw 0.21.4
  • libraw Debian 12 0.20.2-2.1+deb12u1
  • libraw Debian 14, Debian 13 0.21.4-1

debian advisories DEBIAN-CVE-2025-43963

  • libraw Ubuntu 20.04 LTS 0.19.5-1ubuntu1.4
  • libraw Ubuntu 22.04 LTS 0.20.2-2ubuntu2.22.04.2
  • libraw Ubuntu 24.04 LTS 0.21.2-2.1ubuntu0.24.04.1
  • libraw Ubuntu Pro 16.04 LTS 0.17.1-1ubuntu0.5+esm1
  • libraw Ubuntu Pro 18.04 LTS 0.18.8-1ubuntu0.4+esm1

ubuntu advisories UBUNTU-CVE-2025-43963

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

  • libraw SLE Workstation Extension 15 SP7, SLE Workstation Extension 15 SP6 0.18.9-150000.3.30.1
  • libraw SLE Workstation Extension 15 SP7, SLE Workstation Extension 15 SP6, SLE Module for Package Hub 15 SP7 +4 more 0.21.1-150600.3.5.1

suse advisories SUSE-SU-2025:01569-1SUSE-SU-2025:01572-1SUSE-SU-2025:1572-1SUSE-SU-2025:1569-1

  • libraw openSUSE Tumbleweed 0.21.4-1.1

opensuse advisories openSUSE-SU-2025:15025-1

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-2025-43963 updated cvss 2.9

LibRaw: out-of-buffer access

  • Red Hat Enterprise Linux 6 libraw1394 Red Hat Enterprise Linux 7 LibRaw, libraw1394 Red Hat Enterprise Linux 8 LibRaw, libraw1394 Red Hat Enterprise Linux 9 LibRaw
    affected: workaround, no fix available “Fix deferred”

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
18 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
OSV 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia LibRaw_jll
<0.22.1+0
0.22.1+0

Affected products

  • LibRaw LibRaw

Classification

Weakness

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.