Known exploited · SonicWall
CVE-2024-53704: SonicWall SonicOS SSLVPN Improper Authentication Vulnerability
What it is
SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication.
- Vendor
- SonicWall
- Product
- SonicOS
- Added to KEV
- February 18, 2025
- CISA due date
- March 11, 2025
- Ransomware use
- Known
- Weakness
- CWE-287: Improper Authentication
What CISA requires
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Forensic triage
No
What to do now
- Find every instance of SonicOS you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before March 11, 2025 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.