CVE-2026-27596 Exiv2: Integer Underflow in LoaderNative::getData() Causes Heap Buffer Overflow
An integer underflow in Exiv2 causes a heap buffer overflow and crash when processing preview images with specific command-line arguments.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-27596?
CVE-2026-27596 is a low-severity vulnerability in Exiv2 Exiv2, published on 2 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. Prior to version 0.28.8, an out-of-bounds read was found in Exiv2. The vulnerability is in the preview component, which is only triggered when running Exiv2 with an extra command line argument, like -pp. The out-of-bounds read is at a 4GB offset, which usually causes Exiv2 to crash. This issue has been patched in version 0.28.8.
Which versions are affected by CVE-2026-27596?
It affects 1 product.
Products include Exiv2 Exiv2.
How do I fix CVE-2026-27596?
Upgrade to a fixed version.
Is CVE-2026-27596 being exploited?
There is no known exploitation of CVE-2026-27596 in the wild and no public exploit code.
Other vulnerabilities in Exiv2 Exiv2
Sources
Also known as AZL-78521, AZL-78624, DEBIAN-CVE-2026-27596, GHSA-3wgv-fg4w-75x7, JLSEC-2026-1317.