PatchTheCVECVE-2026-0206: A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash
CVE-2026-0206 is a medium-severity flaw (CVSS 4.9) affecting sonicos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.9 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 57%) |
| CISA exploited list | No |
| Weakness | CWE-121 |
| Published | 2026-04-29 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-0206?
sonicos: upgrade to 6.5.5.2-28n, 7.3.2-7010, 8.2.0-8009. Exact commands for each OS are on this page.
Is CVE-2026-0206 being exploited?
CVE-2026-0206 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-0206 affect?
CVE-2026-0206 affects sonicos. Severity is medium (CVSS 4.9). A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.
How urgent is CVE-2026-0206?
Priority 28/100. No elevated risk signals yet.