---
title: "CVE-2024-53704: SonicWall SonicOS SSLVPN Improper Authentication Vulnerability"
url: https://erroneo.us/security/cve/CVE-2024-53704/
description: "CVE-2024-53704 (SonicWall SonicOS): Exploited in the wild (CISA KEV). An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-01-09
date_modified: 2026-08-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-53704"
kev: true
cvss: 8.2
epss: 0.95314
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-53704: SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run SonicWall SonicOS. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-02-18, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-03-11 ; treat that as the outer limit, not the target. CISA also lists it as known to be used in ransomware campaigns .
- EPSS 95.3% , percentile 99.9: FIRST’s model estimates a 95.3% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

## What it is

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

## Affected products (CVE record)

- SonicWall SonicOS: 7.1.1-7058 and older versions, 7.1.2-7019, 8.0.0-8035

## Severity

- CISA-ADP CVSS 3.1: 8.2 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H`

## Exploitation

- CISA KEV: added 2025-02-18; federal due date 2025-03-11. Known ransomware use: Known.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 95.31% probability of exploitation activity in the next 30 days; percentile 99.9.

## Sources

- [psirt.global.sonicwall.com](https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0003)
- [CVE.org record CVE-2024-53704](https://www.cve.org/CVERecord?id=CVE-2024-53704)
- [NVD entry CVE-2024-53704](https://nvd.nist.gov/vuln/detail/CVE-2024-53704)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-53704)

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Source page: https://erroneo.us/security/cve/CVE-2024-53704/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt