CVE-2021-20020: sonicwall global_management_system Improper Authentication
CVSS: 10.0v2.0HighModified
Published 10-04-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20020 is a high (CVSS 10.0) Improper Authentication vulnerability in sonicwall global_management_system. EPSS estimates a 3.73% chance of exploitation in the next 30 days, higher than 89.6% of scored vulnerabilities.
CVSS score
10.0/10
010
High · v2.0 (NVD)EPSS score
3.73%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A command execution vulnerability in SonicWall GMS 9.3 allows a remote unauthenticated attacker to locally escalate privilege to root.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 10.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
3.73%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.73% on 18-09-2026
18-09-202618-10-2026
EPSS score3.73%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Sonicwall2 products
- global_management_system9.3
- global management system (gms)9.3 and earlier
1 vendor · 2 products