CVE-2021-20038
CVSS v3
9.8
CRITICAL
EPSS Score
94.3 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
CISA Known Exploited Vulnerability
- Date Added
- 2022-01-28
- Patch Due Date
- 2022-02-11
- Ransomware Use
- Known
Technical details
- Published
- 2021-12-08
Frequently asked questions
What is CVE-2021-20038?
A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
Is CVE-2021-20038 actively exploited?
Yes. CVE-2021-20038 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-02-11.
What is the CVSS score for CVE-2021-20038?
CVE-2021-20038 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-20038 affecting your environment?
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