Exploited vulnerability · CISA KEV
Yes. CVE-2026-19868, SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 6 Nov 2026, the day it was published. It affects SonicWall SonicOS SSLVPN, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: 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.
SonicWall SonicOS SSLVPN contains a use of single-factor authentication vulnerability that 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).
| Vendor | SonicWall (20 exploited CVEs in KEV) |
| Product | SonicOS SSLVPN |
| Vulnerability | SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability |
| Weakness | CWE-308 |
| Published | 6 Nov 2026 |
| Added to KEV | 6 Nov 2026 |
| Reported by (CNA) | sonicwall |
Yes. CISA added CVE-2026-19868 to the Known Exploited Vulnerabilities catalog on 6 Nov 2026, which means there is reliable evidence of exploitation in the wild.
CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.
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. Check SonicWall's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected SonicOS SSLVPN and watch it for signs of compromise.
Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2026 · SonicWall scorecard · act-now radar.
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