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Exploited vulnerability · CISA KEV

Is CVE-2026-19868 exploited? Yes: in CISA KEV since 6 Nov 2026

Gociux · SonicWall SonicOS SSLVPN · data: CISA KEV, CVE record, FIRST EPSS

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.

exploitedYesCISA KEV · 6 Nov 2026
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity7.5CVSS 3.1 · high
US federal due20 Nov 2026BOD 22-01 deadline

What it is

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).

VendorSonicWall (20 exploited CVEs in KEV)
ProductSonicOS SSLVPN
VulnerabilitySonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
WeaknessCWE-308
Published6 Nov 2026
Added to KEV6 Nov 2026
Reported by (CNA)sonicwall

What to do

  1. Check whether you run it. Look for SonicOS SSLVPN in your asset inventory, including appliances and cloud images. Stack check lists every exploited SonicWall CVE at once.
  2. Apply the fix. 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.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 6 Nov 2026.
  4. Get told next time. Email alerts when CISA adds a CVE for SonicWall.

References

Questions

Is CVE-2026-19868 being exploited?

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.

Is CVE-2026-19868 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2026-19868?

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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