Vulnerability · Published Jun 16, 2021 · Assigned by cisco

CVE-2021-1568Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability

Medium 5.5

In plain English

A medium-severity security flaw in Cisco AnyConnect Secure Mobility Client from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.2%top 89.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected system. This vulnerability is due to uncontrolled memory allocation. An attacker could exploit this vulnerability by copying a crafted file to a specific folder on the system. A successful exploit could allow the attacker to crash the VPN Agent service when the affected application is launched, causing it to be unavailable to all users of the system. To exploit this vulnerability, the attacker must have valid credentials on a multiuser Windows system.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco AnyConnect Secure Mobility Client	n/a

Weakness: CWE-789 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

20210616 Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO