High severity · published Dec 8, 2021
CVE-2021-20043
A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the…
8.8
CVSS
23.3%
EPSS
No
On KEV
Description
A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)23.3% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
S2
Sma 200 Firmware · Sonicwall
10.2.0.8-37sv; 10.2.1.1-19sv · source: NVD
S2
Sma 210 Firmware · Sonicwall
10.2.0.8-37sv; 10.2.1.1-19sv · source: NVD
S4
Sma 400 Firmware · Sonicwall
10.2.0.8-37sv; 10.2.1.1-19sv · source: NVD
S4
Sma 410 Firmware · Sonicwall
10.2.0.8-37sv; 10.2.1.1-19sv · source: NVD
S5
Sma 500v Firmware · Sonicwall
10.2.0.8-37sv; 10.2.1.1-19sv · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20043
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20043
Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
More from Sma 200 Firmware
9.8
CVE-2021-20038
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
9.8
CVE-2021-20016
SonicWall SSLVPN SMA100 SQL Injection Vulnerability
9.1
CVE-2024-38475
Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.
7.2
CVE-2023-44221
SonicWall SMA100 Appliances OS Command Injection Vulnerability
6.5
CVE-2021-20035
SonicWall SMA100 Appliances OS Command Injection Vulnerability