What is CVE-2026-0206?

CVE-2026-0206 is a medium-severity vulnerability in Sonicwall Nsa_2650, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-04-29.

How severe is CVE-2026-0206?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Buffer overflow in Sonicwall Nsa_2650

CVE-2026-0206

A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (43.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Sonicwall Nsa_2650
Sonicwall Nsa_2700
Sonicwall Nsa_2800
Sonicwall Nsa_3600
Sonicwall Nsa_3650
Sonicwall Nsa_3700
Sonicwall Nsa_3800
Sonicwall Nsa_4600
Sonicwall Nsa_4650
Sonicwall Nsa_4700

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

PSIRT@sonicwall.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0206?: CVE-2026-0206 is a medium-severity vulnerability in Sonicwall Nsa_2650, classified under Stack-based Buffer Overflow. CVSS score: 4.9/10. Published 2026-04-29.
How severe is CVE-2026-0206?: Medium severity. CVSS v3 base score is 4.9 out of 10.