Hyperlink Injection in Cisco Webex Meetings and Cisco Webex Meetings Server
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-1221 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco Webex Meetings Server applications / Conferencing, Collaboration and VoIP solutions Cisco WebEx Meetings Server Server applications / Conferencing, Collaboration and VoIP solutions |
| Vendor |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU50317
Risk: Low
CVSSv3.1: 3.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1221
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to inject a hyperlink into a meeting invitation email.
The vulnerability exists due to insufficient validation of user-supplied input in the user interface. A remote authenticated attacker can generate a Webex Meetings invitation email that contains a link to a destination of their choosing.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco Webex Meetings: before 41.1.0.17621
Cisco WebEx Meetings Server: before 4.0MR3 Patch 4
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wbx-linkinj-WWZpVqu9
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
