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Fencer Intel
high 8.2

CVE-2024-53704 kev+ ransomware in the critical feed json

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

published last yr. modified 2d ago also EUVD-2024-52037

cvss
8.2
version 3.1, CNA
cisa kev
Exploited
added 2025-02-18, used in ransomware
epss
95.3%
EPSS 95.3% chance of exploitation in 30 days, percentile 99.8%
public exploits
0
none known

Summary

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

Patch / fix

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

Is CVE-2024-53704 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. Published
  2. CISA SSVC: exploitation active
  3. Added to CISA KEV
  4. CISA patch deadline

Known exploited

Added
last yr.
Patch by
2025-03-11 (last yr.)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
SonicWall, SonicOS
CISA name
SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1199 Trusted Relationship exploitation
  • T1212 Exploitation for Credential Access exploitation
  • T1078.004 Cloud Accounts primary impact
  • T1083 File and Directory Discovery primary impact
  • T1021.001 Remote Desktop Protocol secondary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

95.31% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

  • SonicWall SonicOS

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.