SonicWall SonicOS SSLVPN Improper Authentication Vulnerability
An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to bypass authentication.
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 5 / 5
- KEV catalog (CISA)18 Feb 2025
- Exploited in EUVD (ENISA)18 Feb 2025
- Used by ransomwareyes
- EPSS above 10 %95.3%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Affected products
- 7.1.1-7058 and older versions
- 8.0.0-8035
- 7.1.2-7019
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
-
CISA remediation due date
-
EPSS peak: 95.3%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-83549SonicWall SMA1000 Appliances OS Command Injection Vulnerability4.6 · Actively exploited
- CVE-2026-83548SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability6.0 · Actively exploited
- CVE-2026-15410SonicWall SMA1000 Appliances Code Injection Vulnerability5.6 · Actively exploited
- CVE-2026-15409SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability6.6 · Actively exploited
- CVE-2025-40602SonicWall SMA1000 Missing Authorization Vulnerability3.9 · Background exploitation
- CVE-2023-44221SonicWall SMA100 Appliances OS Command Injection Vulnerability7.0 · Background exploitation