CVE-2026-88387

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-24 · updated 2026-09-29
Weakness: CWE-681

Description

LibRaw 0.22.0 contains an incorrect numeric conversion vulnerability in LibRaw::parse_tiff_ifd() when processing TIFF tag 0x00fe (NewSubfileType). A specially crafted RAW, TIFF, or DNG file can supply an attacker-controlled NewSubfileType value outside the range of a signed int. The parser converts this value and narrows it to int without performing range validation. This out-of-range conversion triggers undefined behavior, resulting in process termination and denial of service.

References

https://github.com/LibRaw/LibRaw/commit/b41cbbd61951783e0440590dae55411a16185bdf
https://github.com/LibRaw/LibRaw/issues/844
https://github.com/LibRaw/LibRaw/pull/853
https://github.com/LibRaw/LibRaw/issues/844

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