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major vulnerability· requires attention

Widely deployed Cisco SD-WAN controllers/managers; auth bypass enables remote admin access and full control of fabric.

Networks

CVE-2026-20182

10.0
Critical
KEV · Exploited in wildEPSS 92%Patch availableMay 15, 2026

Unauthenticated admin access on Cisco SD-WAN Controller/Manager.

common questions

Is CVE-2026-20182 being exploited?

Yes. CVE-2026-20182 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2026-20182?

CVE-2026-20182 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-20182?

Yes. A fix has been recorded for CVE-2026-20182. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-20182 affect?

CVE-2026-20182 affects Cisco Catalyst SD-WAN Controller, Cisco Catalyst SD-WAN Manager (vManage). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-20182?

Apply vendor patch ASAP; restrict admin access to trusted networks.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
Cisco Catalyst SD-WAN ControllerCisco Catalyst SD-WAN Manager (vManage)
impact

Attacker can bypass auth, access NETCONF, and alter SD-WAN fabric configuration and policies.

action required

Patch when possible

affected versions
Cisco Cisco Catalyst SD-WAN Controller
  • affected20.6.4
  • affected20.9.2
  • affected20.3.6
  • affected20.7.2
  • affected20.7.1
  • affected20.5.1
  • affected20.6.2
  • affected19.3.0
  • affected20.6.1
  • affected17.2.4
  • affected18.2.0
  • affected18.4.6
  • affected19.1.0
  • affected19.2.4
  • affected19.2.929
  • affected18.3.8
  • affected18.4.303
  • affected18.3.7
  • affected18.4.1
  • affected19.2.097
  • affected19.2.0
  • affected19.2.099
  • affected18.3.6
  • affected20.4.2
  • affected19.0.0
  • affected20.9.1
  • affected20.3.5
  • affected20.3.1
  • affected18.3.5
  • affected20.6.3
  • affected18.4.3
  • affected18.4.4
  • affected18.3.3
  • affected17.2.8
  • affected20.8.1
  • affected19.2.32
  • affected19.2.2
  • affected17.2.5
  • affected18.4.0
  • affected20.4.1.1
  • affected20.1.3
  • affected20.1.2
  • affected17.2.10
  • affected19.2.098
  • affected20.1.1
  • affected17.2.6
  • affected19.2.1
  • affected18.3.4
  • affected20.4.1
  • affected17.2.9
  • affected19.2.31
  • affected19.0.1a
  • affected18.3.0
  • affected17.2.7
  • affected18.4.5
  • affected20.3.4
  • affected20.3.3
  • affected20.4.1.2
  • affected20.3.2
  • affected18.3.1
  • affected20.1.12
  • affected19.2.3
  • affected20.10.1
  • affected20.6.5
  • affected20.3.7
  • affected20.9.3
  • affected20.11.1
  • affected20.6.3.2
  • affected20.4.2.3
  • affected20.3.5.1
  • affected20.3.4.3
  • affected20.9.3.1
  • affected20.6.4.1
  • affected20.3.3.2
  • affected20.6.5.2
  • affected20.3.7.1
  • affected20.11.1.1
  • affected20.10.1.1
  • affected20.6.1.2
  • affected20.1.3.1
  • affected20.9.2.2
  • affected20.6.5.3
  • affected20.6.3.3
  • affected20.3.7.2
  • affected20.6.5.4
  • affected20.9.2.3
  • affected20.9.4
  • affected20.12.1
  • affected20.3.8
  • affected20.6.6
  • affected20.12.2
  • affected20.13.1
  • affected20.9.5
  • affected20.12.3
  • affected20.6.7
  • affected20.9.5.1
  • affected20.14.1
  • affected20.12.3.1
  • affected20.12.4
  • affected20.15.1
  • affected20.9.6
  • affected20.6.8
  • affected20.16.1
  • affected20.9.5.3
  • affected20.12.4.1
  • affected20.15.2
  • affected20.12.5
  • affected20.9.7
  • affected20.15.3
  • affected20.12.5.1
  • affected20.12.5.2
  • affected20.15.4
  • affected20.9.7.1
  • affected20.12.6
  • affected20.9.8
  • affected20.15.4.1
  • affected20.15.4.2
  • affected20.12.5.3
  • affected20.12.6.1
  • affected20.9.8.2
  • affected20.15.5
  • affected20.12.7
  • affected20.9.9
  • affected20.15.5.1
  • affected20.15.4.3
  • affected20.15.4.5
  • affected20.15.5.3
  • affected20.12.7.2
  • affected20.9.9.2
Cisco Cisco Catalyst SD-WAN Manager
  • affected20.1.12
  • affected19.2.1
  • affected18.4.4
  • affected18.4.5
  • affected20.1.1.1
  • affected20.1.1
  • affected19.2.099
  • affected18.3.6
  • affected18.3.7
  • affected19.2.0
  • affected19.1.0
  • affected18.4.303
  • affected19.2.098
  • affected18.3.6.1
  • affected18.2.0
  • affected17.2.8
  • affected18.3.3.1
  • affected18.4.0
  • affected18.3.1
  • affected17.2.6
  • affected17.2.9
  • affected17.2.5
  • affected18.4.0.1
  • affected18.3.3
  • affected18.3.0
  • affected19.2.3
  • affected18.4.501_ES
  • affected20.1.2
  • affected19.2.929
  • affected19.2.31
  • affected20.3.2
  • affected19.2.4
  • affected19.2.4.0.9
  • affected20.1.3.1

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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