CVE-2024-53704

CRITICAL9.8

CISA KEV

Published 2025-01-09 · Updated 2026-08-04 · Source PSIRT@sonicwall.com

Summary

CVE-2024-53704 is a critical-severity (CVSS 9.8) vulnerability in SonicWall SonicOS. CISA added it to the Known Exploited Vulnerabilities catalog on February 18, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by March 11, 2025. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. SonicWall has 19 vulnerabilities in the KEV catalog, 13 of them linked to ransomware.

All 19 known-exploited SonicWall vulnerabilities →

Description

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

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-287

CISA Known-Exploited Vulnerability

Product: SonicWall — SonicOS

Name: SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

Date added: 2025-02-18 · Due: 2025-03-11

USED IN RANSOMWARE

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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CVE-2026-15409
RANSOMWARE
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added 2026-07-14
CVE-2026-15410
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added 2025-12-17
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added 2025-05-01

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