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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat Enterprise Linux 10 affected —
Red Hat Red Hat Enterprise Linux 6 affected —
Red Hat Red Hat Enterprise Linux 7 affected —
Red Hat Red Hat Enterprise Linux 8 affected —
Red Hat Red Hat Enterprise Linux 9 affected —
Red Hat Red Hat Enterprise Linux 9 affected —
Red Hat Red Hat Hardened Images affected —
Red Hat Red Hat OpenShift Container Platform 4 affected —

No data.

No data.

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Project Subscriptions

Vendors Products
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Enterprise Linux Subscribe
Hummingbird Subscribe
Openshift Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-87875 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2530994 cve-icon cve-icon
https://github.com/OpenPrinting/cups/security/advisories/GHSA-559w-7676-3xrq cve-icon cve-icon cve-icon
History

Wed, 09 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Cups: openprinting cups: heap out-of-bounds read in cupsutf32toutf8() via missing source-length bound
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-125
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-09T17:58:03.305Z

Reserved: 2026-09-09T13:58:00.395Z

Link: CVE-2026-87875

cve-icon Vulnrichment

Updated: 2026-09-09T17:57:36.184Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-09T17:17:53.240

Modified: 2026-09-09T20:13:26.720

Link: CVE-2026-87875

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T19:00:15Z

Weaknesses