CVE-2026-121517

MEDIUM 5.0CVE-2026-121517 · Published 03/11/2026 · updated 03/11/2026

In short

CVE-2026-121517 is a MEDIUM (CVSS 5.0) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.29%, higher than 21.3% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

A vulnerability was detected in IrfanView 4.76.0.0 on Win64. Affected by this vulnerability is an unknown functionality of the component TIFF Wang Annotation Handler. Performing a manipulation results in heap-based buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit is now public and may be used. It is recommended to apply a patch to fix this issue. The vendor confirms: "[T]he TIF-Annotations option is OFF by default. Means, normal users are not affected ... the danger level for this is low".

References

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