CVE-2025-43961

Availability loss via unchecked Fujifilm metadata offsets

Published Apr 20, 2025 · Updated Nov 3, 2025

Out-of-bounds read in LibRaw before 0.21.4 allows local users to reduce application availability via crafted Fujifilm metadata. The Fujifilm 0xf00c path in LibRaw::parse_tiff_ifd subtracts 15 from a matched white-balance table index and reads subsequent RAF entries without first ensuring the index and offsets remain within lenRAFData. Triggering requires crafted metadata to reach local RAW processing, and the CNA assessment limits the reported consequence to reduced availability.

CVSS severity9.1
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in LibRaw before 0.21.4 allows local users to reduce application availability via crafted Fujifilm metadata. The Fujifilm 0xf00c path in LibRaw::parse_tiff_ifd subtracts 15 from a matched white-balance table index and reads subsequent RAF entries without first ensuring the index and offsets remain within lenRAFData. Triggering requires crafted metadata to reach local RAW processing, and the CNA assessment limits the reported consequence to reduced availability.

The record

CVE
CVE-2025-43961
Published
Apr 20, 2025
Updated
Nov 3, 2025
Vendor
LibRaw LLC
Product
LibRaw
Classifications
CWE-125
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <0.21.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibRaw LLC · LibRawversion=0 <0.21.4

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
2.9MITRECVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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