CVE-2021-20023 is a post-authentication arbitrary file read vulnerability affecting SonicWall Email Security version 10.0.9.x. This flaw allows an authenticated attacker to read any file on the remote host. While rated Medium severity (CVSS 4.9), its high EPSS score and FAUCET Risk Score of 99/100 indicate significant real-world danger. This vulnerability is actively exploited in the wild, notably by ransomware campaigns, and has garnered substantial community discussion and media coverage, despite no public exploit code being readily available.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.0.9.6173CPE matchmatch criteria | cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:* | ||
< 10.0.9.6177CPE matchmatch criteria | cpe:2.3:o:sonicwall:email_security_appliance_9000_firmware:*:*:*:*:*:*:*:* | ||
< 10.0.9.6177CPE matchmatch criteria | cpe:2.3:o:sonicwall:email_security_appliance_3300_firmware:*:*:*:*:*:*:*:* | ||
< 10.0.9.6177CPE matchmatch criteria | cpe:2.3:o:sonicwall:email_security_appliance_4300_firmware:*:*:*:*:*:*:*:* | ||
< 10.0.9.6177CPE matchmatch criteria | cpe:2.3:o:sonicwall:email_security_appliance_8300_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.