CVE-2026-19868
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).
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CISA says: 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.
Show me how to fix itTimeline
- Added to CISA known exploited list
- Published by NVD
- First covered by RedTeamDaily
- Last updated by NVD
Coverage
SonicWall patches exploited SonicOS flaw that weakens VPN logins
SonicWall has patched CVE-2026-19868, a SonicOS vulnerability that is being exploited and weakens VPN authentication. An attacker holding valid credentials for an alternative login method can bypass SAML checks, including SAML-enforced MFA. Administrators should apply the vendor patch to SonicOS devices as a priority.
Sources: NVD and CISA known exploited vulnerabilities catalogue.