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4.3 Medium

CVE-2026-87875 Cups: openprinting cups: heap out-of-bounds read in cupsutf32toutf8() via missing source-length bound

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.

CVSS 3.1 detail

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

Exploitable from the adjacent network, without an account and without any user action; the impact on data or service is limited.

Attack vector
Adjacent network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Hardened Images 2.4 earliest → < 2.4.19-4.1.hum1 2.4.19-4.1.hum1
Red Hat OpenShift Container Platform 4 Versions not published

References

Timeline

  1. Published
  2. Last modified

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