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CVE-2023-20269

Severity not reported CISA KEV
Data quality: kev only. This record comes from the CISA KEV catalog only; NVD details have not been synced yet.

Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability

Vendor / product: Cisco — Adaptive Security Appliance and Firepower Threat Defense

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.

CVSS
—
Not reported by the source
Timeline (UTC)
Published: not reported
Modified: not reported
NVD status: not reported
Last synced 1 day ago
Verified against the source API 2026-10-27 06:50 UTC
Exploitation
Listed in CISA KEV
Added 2023-09-13 · due 2023-10-04
Known ransomware use: Known

Required action (CISA)

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

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

  • No references reported.

Data sources

CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗

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