CVE-2021-20023 is a medium severity vulnerability with a CVSS score of 4.9. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.
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High probability of exploitation in the next 30 days
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
SonicWall Email Security contains a path traversal vulnerability that allows a post-authenticated attacker to read files on the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20022 to achieve privilege escalation.
| Vendor | Product |
|---|---|
| Sonicwall | Email Security Appliance 5000 |
| Sonicwall | Email Security Appliance 7050 Firmware |
| Sonicwall | Email Security Appliance 8300 Firmware |
| Sonicwall | Email Security Appliance 8300 |
| Sonicwall | Email Security Appliance 3300 Firmware |
| Sonicwall | Email Security Appliance 4300 Firmware |
| Sonicwall | Email Security Appliance 5000 Firmware |
| Sonicwall | Email Security Appliance 5050 Firmware |
| Sonicwall | Email Security Appliance 7000 |
| Sonicwall | Email Security Appliance 3300 |
And 10 more...