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Vulnerabilities

Vulnerability · CVE-2004-0493

The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedne…

Published Aug 6, 2004 · catalog updated Jun 16, 2026 · converged communications server

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2004-0493 is not in CISA KEV. FIRST estimates a 84.78% chance of exploitation in the next 30 days. Check whether you run converged communications server.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
84.78%
Remediation
Advisory link
Affected products
cpe apache/http server · cpe avaya/converged communications server · cpe gentoo/linux · cpe trustix/secure linux

The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

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.

  • cpe apache/http server2.0.47
  • cpe avaya/converged communications server2.0
  • cpe gentoo/linux1.4
  • cpe trustix/secure linux1.5
  • cpe trustix/secure linux2.0
  • cpe trustix/secure linux2.1

How to fix CVE-2004-0493

What to do

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

Should you patch?

CVE-2004-0493 is not in CISA KEV. FIRST estimates a 84.78% chance of exploitation in the next 30 days. Check whether you run converged communications server.

Which versions are affected?

Compare what you have installed with apache/http server 2.0.47; avaya/converged communications server 2.0; trustix/secure linux 1.5; trustix/secure linux 2.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 84.78%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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. Aug 6, 2004 · Monitored products — critical

    Detected

    The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

Sources

  • CVE.orgVulnerability recordCVE-2004-0493

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2004-0493

    The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 3, 2026