CVE-2021-20023 KEV
4.9
MEDIUM · CVSS 3.1 · EPSS 51.4% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
Description
SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to read an arbitrary file on the remote host.
Scoring
| CVSS | 4.9 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 51.41% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-04-20 |
| Last modified | 2026-08-12 |
CISA KEV
| Name | SonicWall Email Security Path Traversal Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | SonicWall / SonicWall Email Security |
| Ransomware use | known |
Affected (20)
| Vendor | Product |
|---|---|
| microsoft | windows |
| sonicwall | email security |
| sonicwall | email security appliance 3300 |
| sonicwall | email security appliance 3300 firmware |
| sonicwall | email security appliance 4300 |
| sonicwall | email security appliance 4300 firmware |
| sonicwall | email security appliance 5000 |
| sonicwall | email security appliance 5000 firmware |
| sonicwall | email security appliance 5050 |
| sonicwall | email security appliance 5050 firmware |
| sonicwall | email security appliance 7000 |
| sonicwall | email security appliance 7000 firmware |
| sonicwall | email security appliance 7050 |
| sonicwall | email security appliance 7050 firmware |
| sonicwall | email security appliance 8300 |
| sonicwall | email security appliance 8300 firmware |
| sonicwall | email security appliance 9000 |
| sonicwall | email security appliance 9000 firmware |
| sonicwall | email security virtual appliance |
| sonicwall | hosted email security |
References
→ the Explorer · watch your stack · NVD