ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-43964

In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.

Published Apr 20, 2025 · catalog updated Nov 3, 2025 · LibRaw LibRaw

Severity
Low2.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.4%
Remediation
Version ranges on file
Affected products
vendor LibRaw LibRaw 0 <0.21.4

In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

  • CWE classification

    No CWE identifiers stored yet.

  • Prerequisites and impact

    Follow the original vendor advisory for access prerequisites and impact. This catalog does not invent exploit conditions.

How to fix CVE-2025-43964

What to do

Three reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2025-43964 is a low issue in LibRaw LibRaw (CVSS 2.9). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether LibRaw LibRaw is installed. Ranges on record: LibRaw LibRaw 0 <0.21.4 (0 <0.21.4). Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 2.9. EPSS 0.4%. CISA does not currently list it as known exploited. Weaknesses: not classified. Sources: epss, euvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 20, 2025 · EUVD

    Detected

    In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.

  2. Nov 3, 2025 · EUVD

    Updated

    In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • vendor LibRaw LibRaw 0 <0.21.40 <0.21.4

Sources

  • FIRST EPSSExploitation probabilityCVE-2025-43964

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-11959

    In LibRaw before 0.21.4, tag 0x412 processing in phase_one_correct in decoders/load_mfbacks.cpp does not enforce minimum w0 and w1 values.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.