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TI-2021-01011 Aliases CVE-2021-1284GHSA-5frf-w38r-8j6h

Cisco SD-WAN vManage Software Authentication Bypass Vulnerability

Priority MEDIUM 40CWE-284Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

A vulnerability in the web-based messaging service interface of Cisco SD-WAN vManage Software could allow an unauthenticated, adjacent attacker to bypass authentication and authorization and modify the configuration of an affected system. To exploit this vulnerability, the attacker must be able to access an associated Cisco SD-WAN vEdge device. This vulnerability is due to insufficient authorization checks. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based messaging service interface of an affected system. A successful exploit could allow the attacker to gain unauthenticated read and write access to the affected vManage system. With this access, the attacker could access information about the affected vManage system, modify the configuration of the system, or make configuration changes to devices that are managed by the system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00441 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco SD-WAN vManageall versions—No fix listedCNA
  • Cisco SD-WAN vManage VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*20.4 to before 20.4.1; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:*before 20.3.1VulnerableCisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.1; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* Versions before 20.3.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1284
  2. 2026-10-03 Alias added: GHSA-5frf-w38r-8j6h

References

Advisory 1

  • TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16340 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-16436 Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2022-05334 Cisco SD-WAN Software Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2026-16341 Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability KEVCVSS 3.1HIGH 7.5
See all 91 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences