Secure Firewall ASA and FTD

CVE-2024-20261: A vulnerability in the file policy feature that is used to inspect encrypted archive files of Cisco Firepow…

A vulnerability in the file policy feature that is used to inspect encrypted archive files of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured file policy to block an encrypted archive file.

Published

ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 5.8
EPSS0.37%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.2See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.6See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.4See the advisory
Cisco Firepower Threat Defense Software 6.7See the advisory
Cisco Firepower Threat Defense Software 6.7See the advisory
Cisco Firepower Threat Defense Software 6.7See the advisory
Cisco Firepower Threat Defense Software 6.7See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.0See the advisory
Cisco Firepower Threat Defense Software 7.1See the advisory
Cisco Firepower Threat Defense Software 7.1See the advisory
Cisco Firepower Threat Defense Software 7.1See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.2See the advisory
Cisco Firepower Threat Defense Software 7.3See the advisory
Cisco Firepower Threat Defense Software 7.3See the advisory
Cisco Firepower Threat Defense Software 7.3See the advisory
Cisco Firepower Threat Defense Software 7.3See the advisory

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

A vulnerability in the file policy feature that is used to inspect encrypted archive files of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured file policy to block an encrypted archive file. This vulnerability exists because of a logic error when a specific class of encrypted archive files is inspected. An attacker could exploit this vulnerability by sending a crafted, encrypted archive file through the affected device. A successful exploit could allow the attacker to send an encrypted archive file, which could contain malware and should have been blocked and dropped at the Cisco FTD device.

Exploitation

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.

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