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TI-2021-01227 Aliases CVE-2021-1500GHSA-hhx6-gmw8-x326

Cisco Webex Video Mesh Arbitrary Site Redirection Vulnerability

Priority LOW 29CWE-601Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.

Summary

A vulnerability in the web-based management interface of Cisco Webex Video Mesh could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the URL parameters in an HTTP request. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to redirect a user to a malicious website. Attackers may use this type of vulnerability, known as an open redirect attack, as part of a phishing attack to persuade users to unknowingly visit malicious sites.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00815 57th 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 Webex Video Meshall versions—No fix listedCNA
  • Cisco Webex Video Mesh VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:cisco:collaboration_meeting_rooms:2.0:*:*:*:*:*:*:*2.0VulnerableCisco
cpe:2.3:a:cisco:webex_video_mesh:*:*:*:*:*:*:*:*before 2021.10.18.2439mVulnerableCisco
  • cpe:2.3:a:cisco:collaboration_meeting_rooms:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:webex_video_mesh:*:*:*:*:*:*:*:* Versions before 2021.10.18.2439m Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-1500
  2. 2026-10-03 Alias added: GHSA-hhx6-gmw8-x326

References

Advisory 1

  • TI-2018-03923 Uncontrolled resource consumption in Linux Kernel CVSS 3.1HIGH 7.5
  • TI-2019-12044 Cisco Webex Video Mesh Node Command Injection Vulnerability CVSS 3.1HIGH 7.2
  • TI-2021-17310 Cisco Webex Video Mesh Cross-Site Scripting Vulnerability CVSS 3.1MEDIUM 6.1

Sources

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