CVE-2021-20034 EXPLOIT
9.1
CRITICAL · CVSS 3.1 · EPSS 81% (pctl 100)
Patch early
A public exploit exists.
Description
An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.
Scoring
| CVSS | 9.1 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| EPSS | 81.01% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-284 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-09-27 |
| Last modified | 2026-06-17 |
Affected (9)
| Vendor | Product |
|---|---|
| sonicwall | sma 200 |
| sonicwall | sma 200 firmware |
| sonicwall | sma 210 |
| sonicwall | sma 210 firmware |
| sonicwall | sma 400 |
| sonicwall | sma 400 firmware |
| sonicwall | sma 410 |
| sonicwall | sma 410 firmware |
| sonicwall | sma 500v |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | SonicWall SMA 10.2.1.0-17sv - Password Reset | 2021-10-20 |
References
- http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
- http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
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