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Vulnerabilities

Vulnerability · CVE-2026-55480

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

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

Check if you run it

No confirmed exploitation is on record for CVE-2026-55480. EPSS is 0.16%. 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
Medium5.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
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, copy_model() in scheduler/ipp.c creates a predictable TempDir/ .ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Exploitation requires an lp-group process able to write that directory to predict the connection-derived name and plant a symlink before the root open, while a privileged add-printer or modify-printer operation using a model PPD triggers copy_model(). The reporter treats an existing lp foothold and the privileged operation as distinct prerequisites, while the maintainer assesses high privileges because installing the relevant filter or administering the printer requires root or print-administrator access. If the race succeeds, the root scheduler follows the symlink and truncates or overwrites a root-writable target with generated PPD data, compromising file integrity or availability. 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-2026-55480

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-2026-55480. EPSS is 0.16%. 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-377; CWE-59: Link Following. EPSS 0.16%. 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, copy_model() in scheduler/ipp.c creates a predictable TempDir/ .ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Exploitation requires an lp-group process able to write that directory to predict the connection-derived name and plant a sy

  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, copy_model() in scheduler/ipp.c creates a predictable TempDir/ .ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Exploitation requires an lp-group process able to write that directory to predict the connection-derived name and plant a sy

Sources

  • CVE.orgVulnerability recordCVE-2026-55480

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, copy_model() in scheduler/ipp.c creates a predictable TempDir/ .ppd path in an lp-group-writable directory and opens it as root without O_EXCL or O_NOFOLLOW. Expl

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-55480

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-55480

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, copy_model() in scheduler/ipp.c creates a predictable TempDir/ .ppd path in an lp-group-writable directory and opens it as root without O_EXCL o

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-55480
    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.