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CVE-2021-20035

MEDIUMCVSS 6.5/10Actively ExploitedEPSS 3.89%

Last modified

CVE-2021-20035 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Improper neutralization of special elements in the SMA100 management interface allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user which potentially leads to DoS.. CISA has confirmed active exploitation in the wild. EPSS estimates a 3.89% chance of exploitation in the next 30 days.

Description

Improper neutralization of special elements in the SMA100 management interface allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user which potentially leads to DoS.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.89%

88.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
SonicwallSma 200 Firmware< 9.0.0.11-31sv
SonicwallSma 200 Firmware>= 10.2.0.0, < 10.2.0.8-37sv
SonicwallSma 200 Firmware>= 10.2.1.0, < 10.2.1.1-19sv
SonicwallSma 210 Firmware< 9.0.0.11-31sv
SonicwallSma 210 Firmware>= 10.2.0.0, < 10.2.0.8-37sv
SonicwallSma 210 Firmware>= 10.2.1.0, < 10.2.1.1-19sv
SonicwallSma 400 Firmware< 9.0.0.11-31sv
SonicwallSma 400 Firmware>= 10.2.0.0, < 10.2.0.8-37sv
SonicwallSma 400 Firmware>= 10.2.1.0, < 10.2.1.1-19sv
SonicwallSma 410 Firmware< 9.0.0.11-31sv
SonicwallSma 410 Firmware>= 10.2.0.0, < 10.2.0.8-37sv
SonicwallSma 410 Firmware>= 10.2.1.0, < 10.2.1.1-19sv
SonicwallSma 500v< 9.0.0.11-31sv
SonicwallSma 500v>= 10.2.0.0, < 10.2.0.8-37sv
SonicwallSma 500v>= 10.2.1.0, < 10.2.1.1-19sv

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2021-20035?
Improper neutralization of special elements in the SMA100 management interface allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user which potentially leads to DoS.
How severe is CVE-2021-20035?
CVE-2021-20035 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.89% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2021-20035?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20035?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST