CVE-2026-87875: Red Hat Enterprise Linux 10

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Red Hat Enterprise Linux 10
• Red Hat Red Hat Enterprise Linux 6
• Red Hat Red Hat Enterprise Linux 7
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 9
• Red Hat Red Hat Hardened Images: before 2.4.19-4.1.hum1 (fixed in 2.4.19-4.1.hum1)
• Red Hat Red Hat Openshift Container Platform 4

Published 2026-09-09. Last modified 2026-09-12.