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TI-2021-01255 Aliases CVE-2021-1528GHSA-cpmx-5wrq-wv6m

Cisco SD-WAN Software Privilege Escalation Vulnerability

Priority LOW 36CWE-250Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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-250.

Summary

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated privileges on an affected system. This vulnerability exists because the affected software does not properly restrict access to privileged processes. An attacker could exploit this vulnerability by invoking a privileged process in the affected system. A successful exploit could allow the attacker to perform actions with the privileges of the root user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00248 16th 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 Solutionall versions—No fix listedCNA
  • Cisco SD-WAN Solution VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 19

CPEVersionsRoleVendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:a:cisco:vsmart_controller:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_100:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_1000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_100b:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:vsmart_controller:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_1000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_100b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
Show 9 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:cisco:vedge_100m:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_100wm_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_100wm:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_2000_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_2000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_5000_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_5000:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:o:cisco:vedge_cloud_firmware:*:*:*:*:*:*:*:*20.4 to before 20.4.2; 20.5 to before 20.5.1VulnerableCisco
cpe:2.3:h:cisco:vedge_cloud:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:h:cisco:vedge_100m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_100wm_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_100wm:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_2000_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_2000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_5000_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_5000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:o:cisco:vedge_cloud_firmware:*:*:*:*:*:*:*:* Versions 20.4 to before 20.4.2; 20.5 to before 20.5.1 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:vedge_cloud:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1528
  2. 2026-10-03 Alias added: GHSA-cpmx-5wrq-wv6m

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