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Vulnerabilities

Vulnerability · CVE-2009-2299

The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP…

Published Jul 2, 2009 · catalog updated Jun 16, 2026 · hyperguard web application firewall project hyperguard web application firewall

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

Check if you run it

No confirmed exploitation is on record for CVE-2009-2299. EPSS is 4.25%. Act only if a listed version of hyperguard web application firewall project hyperguard web application firewall is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.25%
Remediation
Version ranges on file
Affected products
cpe hyperguard web application firewall project/hyperguard web application firewall

The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

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 hyperguard web application firewall project/hyperguard web application firewall< 2.5.5-11635
  • cpe hyperguard web application firewall project/hyperguard web application firewall< 3.0.3-11636
  • cpe hyperguard web application firewall project/hyperguard web application firewall< 3.1.1-11637

How to fix CVE-2009-2299

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-2009-2299. EPSS is 4.25%. Act only if a listed version of hyperguard web application firewall project hyperguard web application firewall is installed.

Which versions are affected?

Compare what you have installed with hyperguard web application firewall project/hyperguard web application firewall < 2.5.5-11635; hyperguard web application firewall project/hyperguard web application firewall < 3.0.3-11636; hyperguard web application firewall project/hyperguard web application firewall < 3.1.1-11637. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 4.25%. 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. Jul 2, 2009 · Monitored products — critical

    Detected

    The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

Sources

  • CVE.orgVulnerability recordCVE-2009-2299

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2009-2299

    The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 7, 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 4, 2026