CVE-2021-1519
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to overwrite VPN profiles on an affected device. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to modify VPN profile files. To exploit this vulnerability, the attacker must have valid credentials on the affected system.
Key facts
- CVSS score
- 4.7 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
- CWE-20
- EPSS score
- 0.2% (11th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2021-6986)
- Published
- May 6, 2021
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2021-6986 in the EU Vulnerability Database. Last updated in EUVD on November 8, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / anyconnect secure mobility client
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Cisco AnyConnect Secure Mobility Desktop Client Version: 4.1 - Cisco Systems, Inc. - Common Criteria Certificate Number: 2015/96 - archived
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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