Integer overflow in libexif - #VU151467
Published: September 20, 2026
Vulnerability identifier: #VU151467
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to read heap memory out of bounds.
The vulnerability exists due to an integer overflow in exif_data_load_data_entry() when parsing a crafted IFD entry in a large EXIF metadata buffer supplied directly to libexif. A remote attacker can provide a crafted metadata buffer with a large components value to read heap memory out of bounds.
The common JPEG-embedded EXIF extraction path is not affected.
Affected software
libexif
Remediation
Install security update from vendor's website.
libexif - update to 0.6.26