SonicOS firewalls
CVE-2023-1101: SonicOS SSLVPN improper restriction of excessive MFA attempts in SonicOS
SonicOS SSLVPN improper restriction of excessive MFA attempts vulnerability allows an authenticated attacker to use excessive MFA codes.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 8.8
EPSS0.68%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| SonicOS SonicOS 6.5 | See the advisory |
| SonicOS SonicOS NSv 6.5 | See the advisory |
| SonicOS SonicOS NSsp 7.0 | See the advisory |
| SonicOS SonicOS 7.0 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
SonicOS SSLVPN improper restriction of excessive MFA attempts vulnerability allows an authenticated attacker to use excessive MFA codes.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.