Security News > 2021 > May > Cisco fixes 6-month-old AnyConnect VPN zero-day with exploit code
Cisco has fixed a six-month-old zero-day vulnerability found in the Cisco AnyConnect Secure Mobility Client VPN software, with publicly available proof-of-concept exploit code.
The company's AnyConnect Secure Mobility Client allows working on corporate devices connected to a secure Virtual Private Network through Secure Sockets Layer and IPsec IKEv2 using VPN clients available for all major desktop and mobile platforms.
Cisco disclosed the zero-day bug tracked as CVE-2020-3556 in November 2020 without releasing security updates but provided mitigation measures to decrease the attack surface.
While the Cisco Product Security Incident Response Team said that CVE-2020-355 proof-of-concept exploit code is available, it also added that there is no evidence of attackers exploiting it in the wild.
The vulnerability is now addressed n Cisco AnyConnect Secure Mobility Client Software releases 4.10.00093 and later.
This high severity vulnerability was found in Cisco AnyConnect Client's interprocess communication channel, and it may allow authenticated and local attackers to execute malicious scripts via a targeted user.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2020-11-06 | CVE-2020-3556 | Unspecified vulnerability in Cisco Anyconnect Secure Mobility Client 4.9(3052)/98.145(86) A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to cause a targeted AnyConnect user to execute a malicious script. | 7.3 |