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CVE-2023-20269: Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability

criticalknown exploitedCVE-2023-20269
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Ciscoproduct: Adaptive Security ApplianceAuthentication bypass
What
An unauthorized access vulnerability allows an unauthenticated remote attacker to conduct brute force attacks.
Who is affected
Deployments of Cisco Adaptive Security Appliance and Firepower Threat Defense.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security patches provided by Cisco.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-09-13
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-20269

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2023-20269coverage & exploitation statusNVD · CVE.org

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