CVE-2009-20011
CVE-2009-20011 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 4.0 base score 10.0)
- EPSS exploit prediction: 1% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2009-5121
- Weakness: CWE-78
- Published:
- Last modified:
Description
ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 are vulnerable to remote command execution due to insecure handling of file uploads via the mimencode CGI utility. The vulnerability allows unauthenticated attackers to upload and execute arbitrary scripts as the Apache user. Additionally, the exploit can optionally escalate privileges by abusing insecure PATH usage in the benetool binary, resulting in root-level access if successful.
Frequently asked questions
- What is CVE-2009-20011?
- ContentKeeper Web Appliance (now maintained by Impero Software) versions prior to 125.10 are vulnerable to remote command execution due to insecure handling of file uploads via the mimencode CGI utility. The vulnerability allows unauthenticated attackers to upload and execute arbitrary scripts as the Apache user. Additionally, the exploit can optionally escalate privileges by abusing insecure PATH usage in the benetool binary, resulting in root-level access if successful.
- How severe is CVE-2009-20011?
- CVE-2009-20011 has a CVSS 4.0 base score of 10.0, rated critical severity.
- Is CVE-2009-20011 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2009-20011?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2009-20011 have an EU (EUVD) identifier?
- Yes. CVE-2009-20011 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2009-5121.
- When was CVE-2009-20011 published?
- CVE-2009-20011 was published on 2025-08-30 and last updated on 2026-10-01.
References
- http://www.aushack.com/200904-contentkeeper.txt
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/contentkeeperweb_mimencode.rb
- https://web.archive.org/web/20081220084819/http://www.contentkeeper.com/
- https://www.ativion.com/contentkeeper/
- https://www.vulncheck.com/advisories/contentkeeper-web-appliance-rce-via-mimencode
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