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Vulnerabilities

Vulnerability · CVE-2004-0747

Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.

Published Oct 20, 2004 · catalog updated Oct 21, 2026 · Buffer overflow in Apache

Check if you run it

No confirmed exploitation is on record for CVE-2004-0747. EPSS is 1.61%. Act only if a listed version of Buffer overflow in Apache is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Buffer overflow in Apache).
  • 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
1.61%
Remediation
Advisory link
Affected products
Debian:12 apache2 · Debian:13 apache2 · Debian:14 apache2

Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.

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 apache20 → 2.0.51
  • Debian:13 apache20 → 2.0.51
  • Debian:14 apache20 → 2.0.51

How to fix CVE-2004-0747

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-2004-0747. EPSS is 1.61%. Act only if a listed version of Buffer overflow in Apache is installed.

Which versions are affected?

Compare what you have installed with 0 → 2.0.51. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.61%. 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. Oct 20, 2004 · OpenSSF OSV / OSV Scanner

    Detected

    Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.

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

    Fix available

    apache2 fixed in 2.0.51; apache2 fixed in 2.0.51; apache2 fixed in 2.0.51

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

    Fix available

    apache2 fixed in 2.0.51

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

    Updated

    Buffer overflow in Apache 2.0.50 and earlier allows local users to gain apache privileges via a .htaccess file that causes the overflow during expansion of environment variables.

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.