ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-55453

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems.

Published Oct 5, 2026 · catalog updated Oct 15, 2026 · OpenPrinting

Check if you run it

No confirmed exploitation is on record for CVE-2026-55453. EPSS is 0.18%. Act only if a listed version of OpenPrinting is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
Debian:12 cups · Debian:13 cups · Debian:14 cups · vendor OpenPrinting cups

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() writes the value to the scheduler status stream. The scheduler can parse an injected newline as a separate PPD: control line and persist an attacker-selected PPD keyword. The reporter demonstrated that a later print job on a Foomatic-backed queue could consume an injected FoomaticRIPCommandLine value and execute in the filter context as lp. This issue is fixed in version 2.4.20.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 cups2.4.10-1, 2.4.10-2, 2.4.10-3
  • Debian:13 cups2.4.10-3, 2.4.10-3+deb13u1, 2.4.10-3+deb13u2
  • Debian:14 cups2.4.10-3, 2.4.10-4, 2.4.14-1
  • vendor OpenPrinting cupsversion unspecified

How to fix CVE-2026-55453

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-55453. EPSS is 0.18%. Act only if a listed version of OpenPrinting is installed.

Which versions are affected?

Compare what you have installed with 2.4.10-1, 2.4.10-2, 2.4.10-3, 2.4.10-3, 2.4.10-3+deb13u1, 2.4.10-3+deb13u2, 2.4.10-3, 2.4.10-4, 2.4.14-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-74: Injection; CWE-77: Command Injection; CWE-78: OS Command Injection. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · NIST NVD

    Detected

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() writes the value to the scheduler status stream. The scheduler can parse an injected newline as a separate PPD: control li

  2. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() writes the value to the scheduler status stream. The scheduler can parse an injected newline as a separate PPD: control li

Sources

  • CVE.orgVulnerability recordCVE-2026-55453

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() wr

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-55453

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-55453

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() wr

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-55453
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.