CVE-2026-121517

MediumCVSS 5.0/10Last modified Nov 7, 2026

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".

Metrics

CVSS 3.1 5.0/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-119 CWE-122

Affected software

No affected versions have been published.

Timeline

Published: Nov 3, 2026
Last modified: Nov 7, 2026
NVD status: Deferred

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