CVE-2021-20045
9.8
CRITICAL · CVSS 3.1 · EPSS 25.2% (pctl 98)
Patch early
EPSS 25.2% — above the 10% action threshold.
Description
A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated attacker to potentially execute code as the 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 25.21% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-120 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-12-08 |
| Last modified | 2026-06-17 |
Affected (10)
| 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 |
| sonicwall | sma 500v firmware |
References
→ the Explorer · watch your stack · NVD