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Vulnerability record · CVE-2026-19868 · published 6 November 2026

CVE-2026-19868: Sonicwall sonicos vulnerability

Sonicwall · Sonicos

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).

7.5 CVSS 3.1 High CISA KEV since 6 Nov 2026 EPSS 0.53% · top 54.6% CWE-308 · CWE-308
7.5CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
YesIn CISA KEV, federal fix due in 7 days
1Affected product versions listed by NVD
2References
9 Nov 2026Last modified by NVD

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:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

Exploitation in the wild

CISA added CVE-2026-19868 to the Known Exploited Vulnerabilities catalog on 6 November 2026 as "SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability". 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. Federal deadline 20 November 2026.

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-19868 US Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-53704SonicWall SonicOS SSLVPN authentication bypassSonicOS SSLVPN authentication contains an improper authentication flaw (CWE-287) that lets a remote attacker bypass authentication entirely. With a C…KEVEPSS 95%analysed9.8CVE-2024-40766SonicWall SonicOS improper access control in management accessSonicOS management access contains an improper access control flaw that can allow unauthorized resource access and, under specific conditions, crash …KEVEPSS 18%analysed9.8CVE-2020-5135SonicWall SonicOS buffer overflow in firewall request handlingSonicOS contains a classic buffer overflow (CWE-120) reachable by sending a malicious request to the firewall. It affects SonicOS Gen 6 versions 6.5.…KEVEPSS 27%analysed9.8CVE-2025-40600Sonicwall sonicos vulnerabilityUse of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service d…EPSS 0.98%9.8CVE-2024-22394Sonicwall sonicos improper authentication vulnerabilityAn improper authentication vulnerability has been identified in SonicWall SonicOS SSL-VPN feature, which in specific conditions could allow a remote …EPSS 0.75%9.8CVE-2022-22274SonicOS HTTP request stack buffer overflowSonicOS and SonicOSv contain a stack-based buffer overflow reachable through an HTTP request. A remote unauthenticated attacker can trigger it to cra…EPSS 76%analysed9.8CVE-2019-12260Windriver vxworks classic buffer overflow vulnerabilityWind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer…EPSS 23%9.8CVE-2019-12261Windriver vxworks classic buffer overflow vulnerabilityWind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). This is an IPNET security vulnerability: TCP Urg…EPSS 9.0%

Source: NIST National Vulnerability Database (record CVE-2026-19868), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.