Vulnerability · Published Apr 8, 2021 · Assigned by cisco

CVE-2021-1420Cisco Webex Meetings HTML Injection Vulnerability

Medium 4.7

In plain English

A medium-severity security flaw in Cisco Webex Meetings from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)1.0%top 38.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Webex Meetings	n/a

Weakness: CWE-80 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

References

20210407 Cisco Webex Meetings HTML Injection Vulnerability vendor-advisory, x_refsource_CISCO