cvedb.io
CVE-2023-20275
MEDIUM · CVSS 4.1
EPSS exploitation probability: 34%
Published 2023-12-12T18:15:16.520 · Last modified 2026-08-11T19:33:44.513

Summary

A vulnerability in the AnyConnect SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to send packets with another VPN user's source IP address. This vulnerability is due to improper validation of the packet's inner source IP address after decryption. An attacker could exploit this vulnerability by sending crafted packets through the tunnel. A successful exploit could allow the attacker to send a packet impersonating another VPN user's IP address. It is not possible for the attacker to receive return packets.

Affected products

cisco — adaptive_security_appliance_software

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.