CVE-2021-20035
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of service disruption.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- 2025-04-16 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2025-05-07 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 4.4% in the next 30 days (EPSS).
- Severity: 6.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Added to CISA KEV
- 2025-04-16
- Exploit probability
- 4.4% · EPSS, next 30 days
- Weakness
- CWE-78 · OS command injection
- Record status
- Analyzed
Affected
- Sonicwall Sma 200 Firmware < 9.0.0.11-31sv
- Sonicwall Sma 200 Firmware < 10.2.0.8-37sv
- Sonicwall Sma 200 Firmware < 10.2.1.1-19sv
- Sonicwall Sma 210 Firmware < 9.0.0.11-31sv
- Sonicwall Sma 210 Firmware < 10.2.0.8-37sv
- Sonicwall Sma 210 Firmware < 10.2.1.1-19sv
- Sonicwall Sma 400 Firmware < 9.0.0.11-31sv
- Sonicwall Sma 400 Firmware < 10.2.0.8-37sv
Attack profile CVSS 3.1 · 6.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-20035.md and follow it. Check whether this project is affected by CVE-2021-20035. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022