VulnerabilityAwaiting Analysis
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.
MEDIUM 4.3EPSS 0.32%
Does this matter?
Lower severity and a low EPSS score (0.32%). Track it; it rarely justifies an emergency change on its own.
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
- 4.3 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.32% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Source
- secalert@redhat.com
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
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-559w-7676-3xrq
- https://github.com/OpenPrinting/cups/security/advisories/GHSA-559w-7676-3xrq
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.