CVE-2026-40386

EUVD-2026-21734
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.
Wrap or Wraparound
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4 MEDIUM
LOCAL
HIGH
NONE
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
libexif_projectlibexif
𝑥
≤ 0.6.25
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libexif
bookworm
0.6.24-1+deb12u1
fixed
bullseye
vulnerable
bullseye (security)
0.6.22-3+deb11u1
fixed
forky
0.6.26-1
fixed
sid
0.6.26-1
fixed
trixie
0.6.25-1+deb13u1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
libexif
RHEL 8
0:0.6.22-6.el8_10
fixed
libexif-devel
RHEL 8
0:0.6.22-6.el8_10
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b