Threat Intelligence / CVE / CVE-2024-53704

CVE-2024-53704 — SonicWall SonicOS

CISA KEVRansomware
CVSS v3.1 8.2 (HIGH) · EPSS 95.1% (higher than 99.8% of all scored CVEs) · Priority 10/10 · Published 2025-01-09

As of 2026-02-26, CVE-2024-53704 is a HIGH-severity vulnerability in SonicWall SonicOS, CVSS v3.1 8.2, EPSS 95.1% (99.8th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-18), with a US federal remediation deadline of 2025-03-11, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 4 tracked threat campaigns to CVE-2024-53704, most recently “2026 Ransomware Surge Targeting US Organizations: Identity-First Compromise, BYOVD, and Living-Off-the-Cloud Exfiltration (Qilin, Akira, Clop, INC Ransom, Play, DragonForce, Sinobi)”.

Last updated: 2026-02-26

What is CVE-2024-53704?

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

The record classifies CVE-2024-53704 under weakness class CWE-287. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 612 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.2 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS (FIRST)
95.1% probability of exploitation in the next 30 days, higher than 99.8% of all scored CVEs
CISA KEV
Listed since 2025-02-18, federal remediation deadline 2025-03-11 — used in known ransomware campaigns
Threadlinqs priority
10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
Published
2025-01-09, last modified 2026-02-26

Is CVE-2024-53704 being exploited?

CISA added CVE-2024-53704 to the Known Exploited Vulnerabilities catalog on 2025-02-18, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-03-11 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2024-53704 is publicly available. 4 public proof-of-concept repositories are tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (http/cves/2024/CVE-2024-53704.yaml). It currently carries a trending score of 45 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2024-53704

Because CVE-2024-53704 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-03-11. No vendor patch reference has been recorded for CVE-2024-53704 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2024-53704

4 tracked threats in the Threadlinqs corpus reference CVE-2024-53704, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on .

Vendor advisory and patch

Full detection coverage & IOCs for threats exploiting CVE-2024-53704 are available via the Threadlinqs MCP server (Purple tier). View plans →

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