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Actively exploited

Listed in CISA’s Known Exploited Vulnerabilities catalog since September 13, 2023.

Known ransomware use

CVE-2023-20269

Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability

Cisco · Adaptive Security Appliance and Firepower Threat Defense

Added to KEV September 13, 2023

Alert details

Source feed
CISA KEV
CVE ID
CVE-2023-20269
CWE
CWE-288
Affected products
Adaptive Security Appliance and Firepower Threat Defense · Cisco Adaptive Security Appliance and Firepower Threat Defense · Cisco

What happened

Cisco Adaptive Security Appliance and Firepower Threat Defense contain an unauthorized access vulnerability that could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or establish a clientless SSL VPN session with an unauthorized user.

What it means for your business

Cisco Adaptive Security Appliance and Firepower Threat Defense is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2023-20269). Cisco Adaptive Security Appliance and Firepower Threat Defense contain an unauthorized access vulnerability that could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or establish a clientless SSL VPN session with an unauthorized user. CISA remediation due date: 2023-10-04. If you need help checking exposure, call (864) 335-9223.

Required action

Apply mitigations per vendor instructions for group-lock and vpn-simultaneous-logins or discontinue use of the product for unsupported devices.

CISA due date: October 4, 2023

Sources

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