Out-of-bounds write in Exiv2 - CVE-2026-68546
Published: August 31, 2026
Vulnerability identifier: #VU146330
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68546
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds write in RemoteIo::Impl::populateBlocks when reading data from a malicious remote server through a URL input. A remote attacker can serve a specially crafted file from a malicious remote server to cause a denial of service.
The issue affects the RemoteIo class and can be triggered only when Exiv2 is run on a URL rather than a local file.
Affected software
Exiv2
How to mitigate CVE-2026-68546
Install security update from vendor's website.
Exiv2 - update to 0.28.9