CVE-2021-20016

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.400 · 99 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

40.0% (99th) EPSS

CVSS 7.5 · high

Is it mine?

13 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2021-11-17

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-22

SonicWall SSLVPN SMA100 SQL Injection Vulnerability

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-89USprimaryCWE-89US

affected products (13)

Products and version ranges known to be affected.

SonicWall SonicWall SMA100≤ SMA100 build version 10.xenisa_euvdEU
SonicWall SMA 10010.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
SonicWall SMA 20010.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
SonicWall SMA 21010.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
SonicWall SMA 40010.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
SonicWall SMA 41010.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
SonicWall SMA 500v10.0.0.0 → 10.2.0.5-d-29svfstec_bduRU
sonicwall sma 100 firmware10.0.0.0 → 10.2.0.5-d-29svnvdUScpe:2.3:o:sonicwall:sma_100_firmware:*:*:*:*:*:*:*:*
sonicwall sma 200 firmwareall versionsnvdUScpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
sonicwall sma 210 firmwareall versionsnvdUScpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
sonicwall sma 400 firmwareall versionsnvdUScpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
sonicwall sma 410 firmwareall versionsnvdUScpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
sonicwall sma 500vall versionsnvdUScpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-02-04modified 2026-08-12

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+23815 more

references (5)

External citations — patches, advisories, analysis.

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