What is CVE-2020-5142?

CVE-2020-5142 is a medium-severity vulnerability in SonicWall Sonicos, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-12.

How severe is CVE-2020-5142?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-5142 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in SonicWall Sonicos

CVE-2020-5142

A stored cross-site scripting (XSS) vulnerability exists in the SonicOS SSLVPN web interface. A remote unauthenticated attacker is able to store and potentially execute arbitrary JavaScript code in the firewall SSLVPN portal. This vulnerability affected SonicOS Gen 5 version 5.9.1.7, 5.9.1.13, Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version SonicOS 7.0.0.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.012 (67.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Sonicwall Sonicos — versions SonicOS 5.9.1.13-5n and earlier, SonicOS 6.5.4.7-79n and earlier, 7.0.0.0
Sonicwall Sonicosv

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-5142?: CVE-2020-5142 is a medium-severity vulnerability in SonicWall Sonicos, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-10-12.
How severe is CVE-2020-5142?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-5142 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.