CVE-2021-20019

7.5 highEPSS 1.4%

High (7.5) in sonicwall. EPSS 1.4% chance of exploitation in the next 30 days.

A vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, this can potentially lead to an internal sensitive data disclosure vulnerability.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
CWEs: CWE-119, CWE-200
Published: 2021-06-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

sonicwall:sonicos
sonicwall:sonicosv

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0006
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0006

Check your stack JSON