Threats / SonicWall / CVE-2024-53704
CVE-2024-53704
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
SonicWall SonicOS vulnerability
SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN mechanism allowing remote attackers to bypass authentication without valid credentials.
Verdict
Today item, not a backlog item.
This authentication bypass in a widely-deployed VPN appliance enables unauthenticated remote access to protected networks. Active exploitation and ransomware deployment demonstrate immediate operational risk to organizations relying on SonicOS for perimeter security.
CISA KEV Yes · 2025-02-183Ransomware use Flagged3EPSS 0.95132 (verify live)4Exploit Weaponized · public PoC5
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
385 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-18), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.95132 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: SonicWall, SonicOS. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-287 Improper Authentication — weakness family: Authentication.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I identify the SSLVPN authentication weakness and craft requests that bypass credential validation.
Business
Attackers gain unauthorized remote access to the corporate network without valid user credentials.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I establish a foothold inside the network perimeter and move laterally to identify high-value systems.
Business
Internal systems become exposed to reconnaissance and compromise, expanding the attack surface beyond the VPN gateway.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware payloads across compromised systems to encrypt critical business data.
Business
Operations halt as ransomware encrypts files; the organization faces extortion demands and potential data theft.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05