JLSEC-2026-151 Medium 4.0

In libexif through 0.6.25, an unsigned 32bit integer overflow in Nikon MakerNote handling could...

JLSEC Published: Apr 17, 2026
Modified: Apr 17, 2026
Severity: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Affected Packages: libexif_jll < 0.6.26+0
Aliases / Upstream: EUVD-2026-21732 CVE-2026-40385 GHSA-j9xr-5c85-xjhm

In libexif through 0.6.25, an unsigned 32bit integer overflow in Nikon MakerNote handling could be used by local attackers to cause crashes or information leaks. This only affects 32bit systems.

References

https://github.com/libexif/libexif/commit/93003b93e50b3d259bd2227d8775b73a53c35d58
https://nvd.nist.gov/vuln/detail/CVE-2026-40385
https://github.com/advisories/GHSA-j9xr-5c85-xjhm