What is CVE-2021-20046?

CVE-2021-20046 is a high-severity vulnerability in Sonicwall Nsa_2650, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2022-01-10.

How severe is CVE-2021-20046?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-20046 known to be exploited?

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

Buffer overflow in Sonicwall Nsa_2650

CVE-2021-20046

A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected…

Vulnerability class: Buffer Overflow

EPSS: 0.019 (77.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

GANGE666/Vulnerabilities

References

PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-20046?: CVE-2021-20046 is a high-severity vulnerability in Sonicwall Nsa_2650, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2022-01-10.
How severe is CVE-2021-20046?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-20046 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.