CVE-2026-19868
Published 2026-11-06 · Updated 2026-11-07 · Source PSIRT@sonicwall.com
Summary
CVE-2026-19868 is a high-severity (CVSS 7.5) vulnerability in SonicWall SonicOS SSLVPN. CISA added it to the Known Exploited Vulnerabilities catalog on November 6, 2026, which means exploitation in the wild has been confirmed; US federal agencies must remediate it by November 20, 2026. CISA does not currently list it as used in ransomware campaigns. SonicWall has 20 vulnerabilities in the KEV catalog, 13 of them linked to ransomware.
All 20 known-exploited SonicWall vulnerabilities →Description
An authentication enforcement vulnerability in SonicOS SSLVPN service may allow a user with valid credentials for an alternate authentication method to bypass SAML authentication controls. Successful exploitation may also bypass SAML-enforced multi-factor authentication (MFA).
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
CISA Known-Exploited Vulnerability
Product: SonicWall — SonicOS SSLVPN
Name: SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
Date added: 2026-11-06 · Due: 2026-11-20
Required action: 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.