VULNERABILITY INTELLIGENCE

CVE-2021-20039

CVSS score8.8 HIGH

EPSS probability78.75%

CISA KEVNot currently listed

Published2021-12-08

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

Improper neutralization of special elements in the SMA100 management interface '/cgi-bin/viewcert' POST http method allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Weakness classification

PSIRT@sonicwall.com: CWE-78
nvd@nist.gov: CWE-78

Primary references

PSIRT@sonicwall.com — Exploit, Third Party Advisory, VDB Entry
PSIRT@sonicwall.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0