CVE-2026-40385 Integer overflow in libexif

What is CVE-2026-40385?

CVE-2026-40385 is a medium-severity vulnerability in libexif, published on 12 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-190

Which versions are affected by CVE-2026-40385?

It affects 1 product.

Products include Libexif Project Libexif.

How do I fix CVE-2026-40385?

Upgrade to a fixed version.

Is CVE-2026-40385 being exploited?

There is no known exploitation of CVE-2026-40385 in the wild and no public exploit code.

Other vulnerabilities in libexif

• CVE-2017-7544 Information disclosure in libexif Critical 9.1
• CVE-2018-20030 Denial of service in libexif High 7.5
• CVE-2012-2814 Memory corruption in n/a High 7.5
• CVE-2012-2840 Integer overflow in n/a High 7.5
• CVE-2012-2841 Integer overflow in n/a High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-82685, DEBIAN-CVE-2026-40385, GHSA-j9xr-5c85-xjhm, JLSEC-2026-151, UBUNTU-CVE-2026-40385.