CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2022-01-28Vulnerability

CVE-2021-20038

SonicWall SMA 100 devies are vulnerable to an unauthenticated stack-based buffer overflow vulnerability where exploitation can result in code execution.

Properties

Euvd product
SonicWall SMA100
Vulnerability name
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
First seen
2025-10-21T23:25:23+00:00
Cvss score
9.8
Epss score
0.99912
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-02-11
Euvd assigner
sonicwall
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2022-01-28T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2022-01-28
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
SonicWall
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8

Related Entities (24)

AFFECTS_PRODUCT (20)

→[Product]cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*

HAS_WEAKNESS (2)

→[Weakness]Stack-based Buffer Overflow
→[Weakness]Out-of-bounds Write

DESCRIBES (1)

←[KEVEntry]SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability

INVOLVES (1)

←[Signal]kev_added · 2022-01-28

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CVE-2021-20038 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal