CVE-2021-1302Network attack vector

Cross-tenant access via insufficient authorization checks

Published Jan 20, 2021 · Updated Nov 12, 2024

Authorization bypass in Cisco Catalyst SD-WAN Manager allows remote authenticated users to access unauthorized tenants via crafted HTTP requests. The multi-tenant web management interface performs insufficient authorization checks when processing the requests, allowing a valid tenant account to cross tenant boundaries. The Multi-Tenant feature must be enabled, and a valid account is required; successful exploitation connects that account to tenants it is not authorized to access.

CVSS severity8.8
High
EPSS probability1.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Cisco Catalyst SD-WAN Manager allows remote authenticated users to access unauthorized tenants via crafted HTTP requests. The multi-tenant web management interface performs insufficient authorization checks when processing the requests, allowing a valid tenant account to cross tenant boundaries. The Multi-Tenant feature must be enabled, and a valid account is required; successful exploitation connects that account to tenants it is not authorized to access.

The record

CVE
CVE-2021-1302
Published
Jan 20, 2021
Updated
Nov 12, 2024
Vendor
ClamAV
Product
Cisco Catalyst SD-WAN Manager
Classifications
CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Catalyst SD-WAN Managerversion=n/a

Published CVSS scores

8.8Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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