Out-of-bounds write in Exiv2 - CVE-2026-68546

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

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.

Exiv2
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Desktop Applications Module
openSUSE Leap
openEuler
libexiv2-27
libexiv2-27-64bit
libexiv2-27-64bit-debuginfo
libexiv2-27-32bit
libexiv2-27-32bit-debuginfo
exiv2-lang
exiv2
exiv2-debuginfo
exiv2-debugsource
libexiv2-xmp-static
libexiv2-27-debuginfo
libexiv2-devel
exiv2-help
exiv2-devel

Install security update from vendor's website.

Exiv2 - update to 0.28.9
libexiv2-27 - update to 0.27.5-150400.15.10.1
libexiv2-27-64bit - update to 0.27.5-150400.15.10.1
libexiv2-27-64bit-debuginfo - update to 0.27.5-150400.15.10.1
libexiv2-27-32bit - update to 0.27.5-150400.15.10.1
libexiv2-27-32bit-debuginfo - update to 0.27.5-150400.15.10.1
exiv2-lang - update to 0.27.5-150400.15.10.1
exiv2 - update to 0.27.5-150400.15.10.1
exiv2-debuginfo - update to 0.27.5-150400.15.10.1
exiv2-debugsource - update to 0.27.5-150400.15.10.1
libexiv2-xmp-static - update to 0.27.5-150400.15.10.1
libexiv2-27-debuginfo - update to 0.27.5-150400.15.10.1
libexiv2-devel - update to 0.27.5-150400.15.10.1
exiv2 - update to 0.28.2-10
exiv2-help - update to 0.28.2-10
exiv2-devel - update to 0.28.2-10
exiv2-debugsource - update to 0.28.2-10
exiv2-debuginfo - update to 0.28.2-10

• https://github.com/Exiv2/exiv2/security/advisories/GHSA-3695-mjv8-3r52

• Multiple vulnerabilities in Exiv2
• openEuler 24.03 LTS SP4 update for exiv2
• SUSE update for exiv2