CVE-2026-87875

Description

The cupsUTF32ToUTF8() function in CUPS's cups/transcode.c lacks a source-length bound and can read past the end of the source buffer, resulting in a heap out-of-bounds read. This is reachable via SNMP supply-description parsing in backend/snmp-supplies.c with attacker-controlled content.

References

https://github.com/OpenPrinting/cups/security/advisories/GHSA-559w-7676-3xrq

https://github.com/OpenPrinting/cups/commit/2b1dc178a2d2325135b855142e384f4e8c42d8e4

https://github.com/OpenPrinting/cups/commit/0c6842fc615e8afa284136a092da8178abf5f142

https://bugzilla.redhat.com/show_bug.cgi?id=2530994

https://access.redhat.com/security/cve/CVE-2026-87875

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3