CVE-2026-40386

MEDIUM

libexif < 0.6.25 - Integer Underflow in Fuji and Olympus MakerNote Decoding

Title source: llm

Description

In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.

References (1)

Core 1

Core References

https://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b

View Patch ZIP pw:eip

Scores

CVSS v3 4.0

EPSS 0.0014

EPSS Percentile 3.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-191

Status published

Products (2)

libexif project/libexif < 0.6.25

libexif_project/libexif < 0.6.25

Published Apr 12, 2026

Tracked Since Apr 13, 2026