CVE record · CVE-2021-20043

Heap-based buffer overflow in SonicWall SMA100

No CVSS scoreEPSS 0.23 · 97th percentile

Published by the CVE Program (CNA: sonicwall) at 8 Dec 2021, 09:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
SonicWall	SonicWall SMA100	affected 10.2.0.8-37sv and earlier affected 10.2.1.1-19sv and earlier affected 10.2.1.2-24sv and earlier

Identifiers: CVE-2021-20043
CNA: sonicwall
Weakness (CWE): CWE-122
Tags: SonicWall SMA100
Memory corruption
Published: 8 Dec 2021
Updated: 3 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.23, the 97th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 8 Dec 2021. New records show when each source confirmed them.

Sources

References from the CNA

psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 confirm

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.