Answer in brief
CVE-2026-87875 records a Medium severity (CVSS 4.3) vulnerability in Cups: openprinting cups: heap out-of-bounds read in cupsutf32toutf8() via missing source-length bound. The current sources do not mark it as known exploited. The current feed maps Red Hat/cups (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/rhcos/rhcos (generic), Red Hat/rhel9/cups (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/cups (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/rhcos/rhcos (generic), Red Hat/rhel9/cups (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/cupsgeneric | * | Not reported |
| Red Hat/openshift/ose-rhel-coreos-8generic | * | Not reported |
| Red Hat/rhcos/rhcosgeneric | * | Not reported |
| Red Hat/rhel9/cupsgeneric | * | Not reported |
Published upstream
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 9, 2026
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.
Quoted source text, attributed separately from HOL analysis.