EUVD-2026-12345
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exif_mnote_data_get_value function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow.
Analysis
A critical integer underflow vulnerability in libexif library versions up to 0.6.25 allows attackers to cause buffer overflows when processing malformed EXIF MakerNotes data in image files. This vulnerability can lead to arbitrary code execution or information disclosure when a victim opens a maliciously crafted image file containing specially crafted EXIF metadata. …
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Remediation
Within 24 hours: inventory all systems and applications using libexif (0.6.25 or earlier), including image processing tools, content management systems, and end-user devices; communicate risk to relevant stakeholders. Within 7 days: implement email gateway rules to block suspicious image files and disable automatic EXIF processing where feasible; deploy network detection signatures for exploit attempts. …
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External POC / Exploit Code
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