What is CVE-2021-20031?

CVE-2021-20031 is a medium-severity vulnerability in Sonicwall Nsa_2650, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-10-12.

How severe is CVE-2021-20031?

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

Is CVE-2021-20031 known to be exploited?

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

Open Redirect in Sonicwall Nsa_2650

CVE-2021-20031

A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management users to arbitrary web domains.

Vulnerability class: Open Redirect

EPSS: 0.130 (95.9th 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

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)
PSIRT@sonicwall.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20031?: CVE-2021-20031 is a medium-severity vulnerability in Sonicwall Nsa_2650, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-10-12.
How severe is CVE-2021-20031?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-20031 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.