CVE-2026-40386

CVSS 4 MEDIUMEPSS 0.1%CWE-191

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

12 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

libexif project · libexif

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References

https://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b