CVE-2021-20023

high-risk
Published 2021-04-20

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.

Do I need to act?

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42.7% chance of exploitation in next 30 days
EPSS score — higher than 57% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.9/10 Medium
NETWORK / LOW complexity

Affected Products (11)

Affected Vendors

Sonicwall

References (3)

Vendor Advisory https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010
Vendor Advisory https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
60
/ 100
high-risk
Severity 20/34 · Moderate
Exploitability 24/34 · High
Exposure 16/34 · Moderate