What is CVE-2023-0656?

CVE-2023-0656 is a high-severity vulnerability in Sonicwall Nsa_2700, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2023-03-02.

How severe is CVE-2023-0656?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-0656 known to be exploited?

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

Buffer overflow in Sonicwall Nsa_2700

CVE-2023-0656

A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.

Vulnerability class: Buffer Overflow

EPSS: 0.413 (98.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

PSIRT@sonicwall.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-0656?: CVE-2023-0656 is a high-severity vulnerability in Sonicwall Nsa_2700, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2023-03-02.
How severe is CVE-2023-0656?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-0656 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.