CVE-2026-87875

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.

CVSS 3.1

4.3CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-09-09

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://access.redhat.com/errata/RHSA-2026:66600
• https://access.redhat.com/security/cve/CVE-2026-87875
• https://bugzilla.redhat.com/show_bug.cgi?id=2530994
• https://github.com/OpenPrinting/cups/commit/0c6842fc615e8afa284136a092da8178abf5f142
• https://github.com/OpenPrinting/cups/commit/2b1dc178a2d2325135b855142e384f4e8c42d8e4

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