CVE-2021-29623: EXIV2

Low severity, CVSS 3.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

Affected products

• EXIV2 EXIV2: before 0.27.4 (fixed in 0.27.4)
• Fedoraproject Fedora: version 33 only; version 34 only

Published 2021-05-13. Last modified 2026-06-17.