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TI-2021-01193 Aliases CVE-2021-1466GHSA-v999-55fc-w9ww

Cisco SD-WAN vDaemon Buffer Overflow Vulnerability

Priority LOW 25CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in the vDaemon service of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to cause a buffer overflow on an affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete bounds checks for data that is provided to the vDaemon service of an affected system. An attacker could exploit this vulnerability by sending malicious data to the vDaemon listening service on the affected system. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could allow the attacker to cause the vDaemon listening service to reload and result in a DoS condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00627 50th 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
Partial

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 Catalyst SD-WAN Manager19.2.1; 18.4.4; 20.1.1.1; 20.1.1; 19.3.0; 19.2.2; 19.2.099; 18.3.6; 18.3.7; 19.2.0; 18.3.8; 19.0.0; 19.1.0; 18.4.302; 18.4.303; 19.2.097; 19.2.098; 17.2.10; 18.3.6.1; 19.0.1a; 18.2.0; 18.4.3; 18.4.1; 17.2.8; 18.3.3.1; 18.4.0; 18.3.1; 17.2.6; 17.2.9; 18.3.4; 17.2.5; 18.3.1.1; 18.3.5; 18.4.0.1; 18.3.3; 17.2.7; 17.2.4; 18.3.0—No fix listedCNA
  • Cisco Catalyst SD-WAN Manager VendorCisco Affected 19.2.1; 18.4.4; 20.1.1.1; 20.1.1; 19.3.0; 19.2.2; 19.2.099; 18.3.6; 18.3.7; 19.2.0; 18.3.8; 19.0.0; 19.1.0; 18.4.302; 18.4.303; 19.2.097; 19.2.098; 17.2.10; 18.3.6.1; 19.0.1a; 18.2.0; 18.4.3; 18.4.1; 17.2.8; 18.3.3.1; 18.4.0; 18.3.1; 17.2.6; 17.2.9; 18.3.4; 17.2.5; 18.3.1.1; 18.3.5; 18.4.0.1; 18.3.3; 17.2.7; 17.2.4; 18.3.0 Fixed in — No fix listed CNA

CPE configurations NVD · 38

CPEVersionsRoleVendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.4:*:*:*:*:*:*:*17.2.4VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.5:*:*:*:*:*:*:*17.2.5VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.6:*:*:*:*:*:*:*17.2.6VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.7:*:*:*:*:*:*:*17.2.7VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.8:*:*:*:*:*:*:*17.2.8VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.9:*:*:*:*:*:*:*17.2.9VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.10:*:*:*:*:*:*:*17.2.10VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.2.0:*:*:*:*:*:*:*18.2.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.0:*:*:*:*:*:*:*18.3.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1:*:*:*:*:*:*:*18.3.1VulnerableCisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.4:*:*:*:*:*:*:* Versions 17.2.4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.5:*:*:*:*:*:*:* Versions 17.2.5 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.6:*:*:*:*:*:*:* Versions 17.2.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.7:*:*:*:*:*:*:* Versions 17.2.7 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.8:*:*:*:*:*:*:* Versions 17.2.8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.9:*:*:*:*:*:*:* Versions 17.2.9 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:17.2.10:*:*:*:*:*:*:* Versions 17.2.10 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.2.0:*:*:*:*:*:*:* Versions 18.2.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.0:*:*:*:*:*:*:* Versions 18.3.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1:*:*:*:*:*:*:* Versions 18.3.1 Vulnerable ·Cisco
Show 28 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1.1:*:*:*:*:*:*:*18.3.1.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3:*:*:*:*:*:*:*18.3.3VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3.1:*:*:*:*:*:*:*18.3.3.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.4:*:*:*:*:*:*:*18.3.4VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.5:*:*:*:*:*:*:*18.3.5VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6:*:*:*:*:*:*:*18.3.6VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6.1:*:*:*:*:*:*:*18.3.6.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.7:*:*:*:*:*:*:*18.3.7VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.8:*:*:*:*:*:*:*18.3.8VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0:*:*:*:*:*:*:*18.4.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0.1:*:*:*:*:*:*:*18.4.0.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.1:*:*:*:*:*:*:*18.4.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.3:*:*:*:*:*:*:*18.4.3VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.4:*:*:*:*:*:*:*18.4.4VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.302:*:*:*:*:*:*:*18.4.302VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.303:*:*:*:*:*:*:*18.4.303VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.0:*:*:*:*:*:*:*19.0.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.1a:*:*:*:*:*:*:*19.0.1aVulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.1.0:*:*:*:*:*:*:*19.1.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.0:*:*:*:*:*:*:*19.2.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.1:*:*:*:*:*:*:*19.2.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.2:*:*:*:*:*:*:*19.2.2VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.097:*:*:*:*:*:*:*19.2.097VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.098:*:*:*:*:*:*:*19.2.098VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.099:*:*:*:*:*:*:*19.2.099VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.3.0:*:*:*:*:*:*:*19.3.0VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1:*:*:*:*:*:*:*20.1.1VulnerableCisco
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1.1:*:*:*:*:*:*:*20.1.1.1VulnerableCisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.1.1:*:*:*:*:*:*:* Versions 18.3.1.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3:*:*:*:*:*:*:* Versions 18.3.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.3.1:*:*:*:*:*:*:* Versions 18.3.3.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.4:*:*:*:*:*:*:* Versions 18.3.4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.5:*:*:*:*:*:*:* Versions 18.3.5 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6:*:*:*:*:*:*:* Versions 18.3.6 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.6.1:*:*:*:*:*:*:* Versions 18.3.6.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.7:*:*:*:*:*:*:* Versions 18.3.7 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.3.8:*:*:*:*:*:*:* Versions 18.3.8 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0:*:*:*:*:*:*:* Versions 18.4.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.0.1:*:*:*:*:*:*:* Versions 18.4.0.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.1:*:*:*:*:*:*:* Versions 18.4.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.3:*:*:*:*:*:*:* Versions 18.4.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.4:*:*:*:*:*:*:* Versions 18.4.4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.302:*:*:*:*:*:*:* Versions 18.4.302 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:18.4.303:*:*:*:*:*:*:* Versions 18.4.303 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.0:*:*:*:*:*:*:* Versions 19.0.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.0.1a:*:*:*:*:*:*:* Versions 19.0.1a Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.1.0:*:*:*:*:*:*:* Versions 19.1.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.0:*:*:*:*:*:*:* Versions 19.2.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.1:*:*:*:*:*:*:* Versions 19.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.2:*:*:*:*:*:*:* Versions 19.2.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.097:*:*:*:*:*:*:* Versions 19.2.097 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.098:*:*:*:*:*:*:* Versions 19.2.098 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.2.099:*:*:*:*:*:*:* Versions 19.2.099 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:19.3.0:*:*:*:*:*:*:* Versions 19.3.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1:*:*:*:*:*:*:* Versions 20.1.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.1.1.1:*:*:*:*:*:*:* Versions 20.1.1.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1466
  2. 2026-10-03 Alias added: GHSA-v999-55fc-w9ww
  3. 2026-10-30 EPSS moved to the 50th–90th percentile

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