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Vulnerabilities

Vulnerability · CVE-2004-2154

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowerca

Published Dec 31, 2004 · catalog updated Oct 21, 2026 · CUPS before 1.1.21rc1 treats

Check if you run it

No confirmed exploitation is on record for CVE-2004-2154. EPSS is 2.07%. Act only if a listed version of CUPS before 1.1.21rc1 treats is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (CUPS before 1.1.21rc1 treats).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.07%
Remediation
Advisory link
Affected products
Debian:12 cups · Debian:13 cups · Debian:14 cups

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.

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 cups0 → 1.1.20final+rc1-1
  • Debian:13 cups0 → 1.1.20final+rc1-1
  • Debian:14 cups0 → 1.1.20final+rc1-1

How to fix CVE-2004-2154

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-2004-2154. EPSS is 2.07%. Act only if a listed version of CUPS before 1.1.21rc1 treats is installed.

Which versions are affected?

Compare what you have installed with 0 → 1.1.20final+rc1-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 2.07%. 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.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 31, 2004 · OpenSSF OSV / OSV Scanner

    Detected

    CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.

  2. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    cups fixed in 1.1.20final+rc1-1; cups fixed in 1.1.20final+rc1-1; cups fixed in 1.1.20final+rc1-1

  3. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    cups fixed in 1.1.20final+rc1-1

  4. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.

Sources

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.