SonicWall SonicOS management interface: permissive cross-domain policy (CVSS 3.1 8.8)
cve · CVE-2026-107155
Action items (1)
Do-now tasks recorded on the entries about CVE-2026-107155, newest first. Check the date before acting on an older one.
- Upgrade every SonicWall Gen7 firewall and NSv that serves SAML SSLVPN logins to SonicOS 7.3.4-7013 or later and every Gen8 firewall and NSv to 8.2.3-8015 or later now, because SonicWall lists no workaround and CISA lists the flaw as exploited.2026-11-07CVE-2026-19868 +3
Defender insights
What each entry about CVE-2026-107155 tells a defender to do, newest first.
Story timeline
Hunting pivots
ATT&CK techniques (3 across 4 tactics)
3 techniques observed across 1 entry about this entity, derived from entry metadata and body evidence, never asserted without a published entry behind it · pinned to MITRE ATT&CK v20.0 · compare on the matrix · Navigator layer (JSON)
- Initial AccessValid Accounts · External Remote Services · Exploit Public-Facing Application
- PersistenceValid Accounts · External Remote Services
- Privilege EscalationValid Accounts
- StealthValid Accounts
Initial Access TA0001
T1078Valid Accounts×1
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop. Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network. Adversaries may choose not to use malware or tools in conjunction with the legitimate access those credentials provide to make it harder to detect their presence.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
T1133External Remote Services×1
Adversaries may leverage external-facing remote services to initially access and/or persist within a network. Remote services such as VPNs, Citrix, and other access mechanisms allow users to connect to internal enterprise network resources from external locations. There are often remote service gateways that manage connections and credential authentication for these services. Services such as Windows Remote Management and VNC can also be used externally.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
T1190Exploit Public-Facing Application×1
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network. The weakness in the system can be a software bug, a temporary glitch, or a misconfiguration.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
Persistence TA0003
T1078Valid Accounts×1
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop. Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network. Adversaries may choose not to use malware or tools in conjunction with the legitimate access those credentials provide to make it harder to detect their presence.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
T1133External Remote Services×1
Adversaries may leverage external-facing remote services to initially access and/or persist within a network. Remote services such as VPNs, Citrix, and other access mechanisms allow users to connect to internal enterprise network resources from external locations. There are often remote service gateways that manage connections and credential authentication for these services. Services such as Windows Remote Management and VNC can also be used externally.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
Privilege Escalation TA0004
T1078Valid Accounts×1
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop. Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network. Adversaries may choose not to use malware or tools in conjunction with the legitimate access those credentials provide to make it harder to detect their presence.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
Stealth TA0005
T1078Valid Accounts×1
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop. Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network. Adversaries may choose not to use malware or tools in conjunction with the legitimate access those credentials provide to make it harder to detect their presence.
Evidence: 2026-11-07/cve-2026-19868-sonicwall-sonicos-sslvpn-saml-mfa-bypass-kev · ATT&CK page ↗
Entries about SonicWall SonicOS management interface: permissive cross-domain policy (CVSS 3.1 8.8) (1)
Co-occurring entities
Derived: referenced by the same focused operational entries (weekly summaries and report roundups don't count); ×N counts the shared entries.
- SonicWall SonicOS×1
- SonicWall SonicOS management interface: session validation flaw (CVSS 3.1 8.8)×1
- SonicWall SonicOS SSL-VPN: pre-authentication heap buffer overflow, denial of service (CVSS 3.1 7.5)×1
- SonicWall SonicOS SSLVPN: SAML authentication bypass for a user with alternate-method credentials (CVSS 3.1 7.1), CISA KEV 2026-11-06×1
- SonicWall SSL VPN×1
Where this entity is cited
Source distribution
- bleepingcomputer.com1 (33%)
- cisa.gov1 (33%)
- psirt.global.sonicwall.com1 (33%)
External references
All cited sources (3)
- psirt.global.sonicwall.comprimarySonicWall PSIRT (SNWLID-2026-0014)https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0014
- bleepingcomputer.comBleepingComputerhttps://www.bleepingcomputer.com/news/security/sonicwall-warns-of-new-ssl-vpn-mfa-bypass-flaw-exploited-in-attacks/
- cisa.govCISAhttps://www.cisa.gov/news-events/alerts/2026/11/06/cisa-adds-one-known-exploited-vulnerability-catalog