dbcve.org
Catalyst Sd Wan ManagerApplication · Cisco

CVE-2021-1302

HIGH · 8.8 CVSS v3.1 Published 2021-01-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Multiple vulnerabilities in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to bypass authorization and modify the configuration of an affected system, gain access to sensitive information, and view information that they are not authorized to access. For more information about these vulnerabilities, see the Details section of this advisory.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Multiple authorization bypass vulnerabilities in the web-based management interface of Cisco SD-WAN vManage allow authenticated remote attackers to modify system configurations, access sensitive data, and view unauthorized information. The vulnerabilities stem from improper authorization enforcement in the web interface, enabling attackers with valid credentials to perform actions outside their intended permission scope.

MitigationApply the relevant Cisco security patches for SD-WAN vManage software and review user role-based access control (RBAC) configurations to ensure proper authorization boundaries are enforced.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Catalyst Sd Wan ManagerApplication
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Cisco SD-WAN vManage installation
    Locate the vManage management interface by accessing the web UI or checking system documentation. Typically accessible via browser on port 443 or 8443. Confirm the device is running Cisco SD-WAN vManage software.
    Affected if The system is confirmed to be Cisco SD-WAN vManage (Cisco Catalyst SD-WAN Manager)
  2. Verify web management interface is enabled
    Check if the vManage web-based management interface is active and accessible. This is typically the main administrative portal at the vManage IP/hostname. Confirm the interface responds to HTTP/HTTPS requests.
    Affected if The vManage web management interface is enabled and accessible on the network
  3. Review user authentication configuration
    Examine the authentication settings for the vManage web interface. Check whether local user accounts, external authentication (RADIUS/TACACS+), or SSO are configured. Verify which authentication method is in use.
    Affected if User authentication is configured for the vManage web interface (required for the authorization bypass to be exploitable)
  4. Inspect role-based access control (RBAC) settings
    Review the RBAC configuration within vManage. Check user role assignments and permission boundaries. Look for any user accounts that may have permissions beyond their intended role scope.
    Affected if RBAC is configured and users have assigned roles in the vManage system

If the system is running Cisco SD-WAN vManage with its web management interface enabled and user authentication configured, it is affected by CVE-2021-1302 because all versions of the product are vulnerable to authorization bypass in the web interface.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the relevant Cisco security patches for SD-WAN vManage software and review user role-based access control (RBAC) configurations to ensure proper authorization boundaries are enforced.

Fix this in Catalyst Sd Wan Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-1302 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-1302 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data