Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U H H H 9.8 .9991 100.0 YES
AFFECTED Product Versions Fixed SonicWall SMA100 10.2.0.8-37sv and earlier – —
TIMELINE Dec 17 Reserved by sonicwall Dec 8 Published (CNA: sonicwall) Jan 28 Added to CISA KEV, remediation due 2022-02-11
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.
| Date | Event | Detail |
|---|---|---|
| December 17, 2020 | Reserved | Reserved by sonicwall |
| December 8, 2021 | Published | Published (CNA: sonicwall) |
| January 28, 2022 | KEV ADDED | Added to CISA KEV, remediation due 2022-02-11 |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| SonicWall | SonicWall SMA100 | — | 10.2.0.8-37sv and earlier | — |
Authoritative record: CVE-2021-20038 at cve.org
Vendors: sonicwall
Weaknesses: CWE-121
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-20038 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
