# CVE-2026-107655: Cups: null pointer dereference via embedded job ticket comments allows remote denial of service

Status: published. Published: 2026-10-09. Updated: 2026-11-05.

A flaw was found in CUPS. When processing embedded job ticket comments within documents, the service improperly handles specific IPP attributes, causing an unhandled null pointer dereference. An unauthenticated attacker permitted to submit jobs to a shared printer queue can send a crafted Internet Printing Protocol (IPP) request to crash the print daemon, resulting in a temporary Denial of Service (DoS) for all printing services.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Red Hat / Red Hat Hardened Images (cups-main): ≥ 2.4.19-4.4.hum1; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (cups): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (cups): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (cups): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (cups): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (cups): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 4 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L; source: CNA: redhat

- CVSS 3.1: 4 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 0.25% as of 2026-11-05; percentile 16.58%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-476

## Exploit evidence

- exploit: https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 (ADP: CISA-ADP)

## References

- https://access.redhat.com/errata/RHSA-2026:80679 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-107655 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2548399 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://github.com/OpenPrinting/cups/commit/12237ad (CNA: redhat)

- https://github.com/OpenPrinting/cups/commit/25d6830 (CNA: redhat)

- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 (CNA: redhat)

- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 (ADP: CISA-ADP; exploit)

- https://access.redhat.com/errata/RHSA-2026:80679 (secalert@redhat.com)

- https://access.redhat.com/security/cve/CVE-2026-107655 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2548399 (secalert@redhat.com)

- https://github.com/OpenPrinting/cups/commit/12237ad (secalert@redhat.com)

- https://github.com/OpenPrinting/cups/commit/25d6830 (secalert@redhat.com)

- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 (secalert@redhat.com)

- https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-107655; retrieved 2026-11-05; source updated 2026-11-05

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107655; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-107655; retrieved 2026-11-05; source updated Not reported

Revision: ee4db9eeed29d3003d0953939d1315488598e286e1de06d6167b7700dbf7f3c0

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