Buffer Over-read in libexif - CVE-2026-40385
Published: April 14, 2026
Vulnerability identifier: #VU125896
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-40385
CWE-ID: CWE-126
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: libexif.sourceforge.net
Affected software:
libexif
libexif
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service or disclose sensitive information.
The vulnerability exists due to buffer over-read in Nikon MakerNotes processing when decoding or displaying Exif data with MakerNotes on 32-bit systems. A remote attacker can supply specially crafted Exif data to cause a denial of service or disclose sensitive information.
Only 32-bit systems are affected.
How to mitigate CVE-2026-40385
Install security update from vendor's website.