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CVE-2023-20269
MEDIUM · CVSS 5 ⚠ KEV — EXPLOITED
EPSS exploitation probability: 97%
⚠ Listed in the CISA Known Exploited Vulnerabilities catalog — actively exploited.
Published 2023-09-13 · Last modified 2026-08-06T05:16:38.360

Summary

A vulnerability in the remote access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or an authenticated, remote attacker to establish a clientless SSL VPN session with an unauthorized user. This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features. An attacker could exploit this vulnerability by specifying a default connection profile/tunnel group while conducting a brute force attack or while establishing a clientless SSL VPN session using

Affected products

Cisco — Adaptive Security Appliance and Firepower Threat Defense

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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.