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CVE-2024-53704

SonicWall SonicOS SSLVPN Improper Authentication

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 95.1%
  1. Published9 Jan 2025
  2. Added to CISA KEV18 Feb 2025
  3. Remediation due11 Mar 2025
Actively exploited (CISA KEV)

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

Added to KEV: 18 Feb 2025Federal remediation due: 11 Mar 2025Used in ransomware

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

SonicWall Sonicos≥ 7.1.1-7040 ≤ 7.1.1-7058 · 7.1.2-7019 · 8.0.0-8035

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2024-53704 being actively exploited?

Yes. CVE-2024-53704 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 18 Feb 2025. It has been used in ransomware campaigns.

How severe is CVE-2024-53704?

CVE-2024-53704 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 95.1% probability of exploitation.

Which products are affected by CVE-2024-53704?

Affected products include SonicWall Sonicos.

How do I fix CVE-2024-53704?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-53704 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.