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CVE-2024-53704

Exploited in the wild. In CISA KEV since 2025‑02‑18. A vendor fix is available.

CVSS 3.19.8CriticalEPSS percentile99th95% chance in 30 daysCISA KEVListedsince 2025-02-18, due 2025-03-11
No public exploit knownFixVendor fixNo build named by the sources

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

  • SonicWall SonicOSAffected: 7.1.1-7058 and older versionsUpgrade to: not statedAffected: 7.1.2-7019Upgrade to: not statedAffected: 8.0.0-8035Upgrade to: not statedStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free Nuclei and OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Discuss checks for your systems with a specialist. Scope is agreed before testing.

Coverage timeline

1 publisher

  1. CVE-2024-53704 allows unauthenticated attackers to hijack active SSL VPN sessions in unpatched SonicWall firewalls; active exploitation confirmed.

    ·Bishop Fox

  2. Added to CISA KEV catalog

    ·CISA KEV

  3. Bishop Fox researchers exploited CVE-2024-53704, an authentication bypass in SonicWall SSL VPN allowing session hijacking and unauthorized network access.

    ·Bishop Fox

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

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

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
CISA KEV
CISA KEV

Listed as exploited in the wild since 2025-02-18.

US federal agencies must remediate by 2025-03-11.

Known use in ransomware campaigns.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

95% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

10 events over 572 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. OpenVAS check added
  3. Nuclei check added
  4. Patch availablerecord updated
  5. Added to CISA KEVransomware campaign
  6. Publishedweakness classified, att&ck mapped

Affected products

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 9.8 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 3 more references. See all after sign-in

In the news

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next exploited one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for SonicOS, not every advisory. This one: actively exploited.