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VulnerabilityPublished Updated

CVE-2025-43964: LibRaw · Improper Validation of Specified Quantity in Input

Affects LibRawSource GCVE Database

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Not known to be exploited · CVSS 2.9 Low : upgrade to 0.21.4 when convenient.

Data as of 30 Oct 2026, 00:17 UTC

CVSS 3.1 base score
2.9Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (mitre)CVSS 3.12.9
Patch
Available – fixed in 0.21.4
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Apr 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade LibRaw to 0.21.4.

Affected software

ProductAffectedFixed in
LibRaw LibRawAffected
  • <0.21.4
Fixed in
  • 0.21.4

AI-suggested

If you cannot patch yet, avoid processing untrusted inputs that could trigger the vulnerability.

Description

CVE-2025-43964 is a low-severity vulnerability in LibRaw before version 0.21.4 where the processing of tag 0x412 in the phase_one_correct function does not enforce minimum values for parameters w0 and w1. This improper validation could lead to a denial of service due to an availability impact.

References

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