Cisco Webex Meetings and Webex Meetings Server File Redirect 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 Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to redirect users to a malicious file. This vulnerability is due to improper validation of URL paths in the application interface. An attacker could exploit this vulnerability by persuading a user to follow a specially crafted URL that is designed to cause Cisco Webex Meetings to include a remote file in the web UI. A successful exploit could allow the attacker to cause the application to offer a remote file to a user, which could allow the attacker to conduct further phishing or spoofing attacks.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00783 56th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco WebEx Meetings Server | all versions | — | No fix listed | CNA |
- Cisco WebEx Meetings Server VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings_online:41.3.5:*:*:*:*:*:*:* | 41.3.5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:* | 3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release1:*:*:*:*:*:* | 3.0 maintenance_release1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:* | 3.0 maintenance_release2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:* | 3.0 maintenance_release3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:* | 4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:* | 4.0 maintenance_release1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:* | 4.0 maintenance_release2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:* | 4.0 maintenance_release3 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_meetings_online:41.3.5:*:*:*:*:*:*:* Versions 41.3.5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:* Versions 3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release1:*:*:*:*:*:* Versions 3.0 maintenance_release1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:* Versions 3.0 maintenance_release2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:* Versions 3.0 maintenance_release3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:* Versions 4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:* Versions 4.0 maintenance_release1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:* Versions 4.0 maintenance_release2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:* Versions 4.0 maintenance_release3 Vulnerable ·Cisco
Show 2 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:* | 4.0 maintenance_release3_security_patch3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch4:*:*:*:*:*:* | 4.0 maintenance_release3_security_patch4 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:* Versions 4.0 maintenance_release3_security_patch3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch4:*:*:*:*:*:* Versions 4.0 maintenance_release3_security_patch4 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-1525
- 2026-10-03 Alias added: GHSA-7q8v-785j-jc5w
References
More Cisco Webex Meetings Online vulnerabilities
- TI-2019-01300 Cisco Webex Meetings Desktop App and Cisco Webex Productivity Tools Update Service Command Injection Vulnerability CVSS 3.0HIGH 8.8
- TI-2018-00246 Improper input validation in Cisco WebEx Advanced Recording Format Player CVSS 3.0HIGH 8.8
- TI-2020-02704 Cisco Webex Meetings Suite and Cisco Webex Meetings Online Unauthenticated Meeting Join Vulnerability CVSS 3.1HIGH 7.5
- TI-2020-02689 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.8
- TI-2022-05322 Cisco Webex Meetings Java Deserialization Vulnerability CVSS 3.1HIGH 8.8
- TI-2020-02755 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulnerability CVSS 3.1HIGH 7.8
Sources
- CVE-2021-1525 · CVE Program
- CVE-2021-1525 · NVD
- FIRST EPSS
- GHSA-7q8v-785j-jc5w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences