MEDIUM 4.0 Microsoft
CVE-2026-40386
In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.
Microsoft Security Update 2026-Apr: In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.
Affected Products
- azl3 libexif 0.6.24-2 on Azure Linux 3.0
- azl3 libexif 0.6.24-3 on Azure Linux 3.0
- cbl2 libexif 0.6.24-2 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40386
- https://nvd.nist.gov/vuln/detail/CVE-2026-40386
This medium severity vulnerability with a CVSS score of 4.0 was published on 2026-04-14 via Microsoft. Affected: azl3 libexif 0.6.24-2 on Azure Linux 3.0, azl3 libexif 0.6.24-3 on Azure Linux 3.0, cbl2 libexif 0.6.24-2 on CBL Mariner 2.0.
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