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[ CVE-2024-53704 · Published 9 Jan 2025 ]

SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

Exploited · CISA KEV CVSS 9.8 EPSS 95%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-02-18
  • Known to be used in ransomware campaigns
  • EPSS: 95% chance of exploitation in the next 30 days (higher than 100% of CVEs)
  • Critical severity: CVSS 9.8

[ Description ]Official description

An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to bypass authentication.

CISA: SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 11 Mar 2025): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References