CVE-2026-19868: high-severity vulnerability in SonicWall SonicOS
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
Prioritize patching. It under exploitation confirmed by CISA.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
A flaw in the SonicOS SSL VPN service lets someone who already has valid credentials for a different login method get past SAML sign-in checks. This can also skip the extra verification step (MFA) that SAML is supposed to enforce.
An authentication enforcement weakness (CWE-308) in the SonicOS SSLVPN service allows an attacker holding valid credentials for an alternate authentication method to bypass SAML authentication controls. Successful exploitation may also bypass SAML-enforced multi-factor authentication, leading to unauthorized VPN access (CVSS 7.5, HIGH).
In the same product, most dangerous first.