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Vulnerabilities

Vulnerability · CVE-2011-4415

CVE-2011-4415 is listed by inventory_critical.

Published Nov 8, 2011 · catalog updated Jun 16, 2026 · http server

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-2011-4415. EPSS is 3.02%. Act only if a listed version of http server is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low1.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.02%
Remediation
Advisory link
Affected products
cpe apache/http server

CVE-2011-4415 is listed by inventory_critical.

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
  • cpe apache/http server2.0.28
  • cpe apache/http server2.0.32
  • cpe apache/http server2.0.9

How to fix CVE-2011-4415

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-2011-4415. EPSS is 3.02%. Act only if a listed version of http server is installed.

Which versions are affected?

Compare what you have installed with apache/http server 2.0; apache/http server 2.0.28; apache/http server 2.0.32; apache/http server 2.0.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 3.02%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Apache HTTP Server 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. Nov 8, 2011 · Monitored products — critical

    Detected

    CVE-2011-4415 is listed by inventory_critical.

  2. Jun 16, 2026 · Monitored products — critical

    Updated

    CVE-2011-4415 is listed by inventory_critical.

Sources

  • CVE.orgVulnerability recordCVE-2011-4415

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2011-4415

    The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL pointer dereference) via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a c

    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