UAT-4356's Targeting of Cisco Firepower Devices

Cisco Talos is aware of UAT-4356's continued active targeting of Cisco Firepower devices' Firepower eXtensible Operating System FXOS. UAT-4356 exploited n-day vulnerabilities CVE-2025-20333 and CVE-2025-20362 to gain unauthorized access to vulnerable devices, where the threat actor deployed their...

CVE-2026-20016

A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit this vulnerability, the attack...

CVE-2026-20016

A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit this vulnerability, the attack...

PT-2026-23036

Name of the Vulnerable Software and Affected Versions Cisco Secure Firewall ASA Software and Secure FTD Software affected versions not specified Description A flaw exists in the Cisco FXOS Software CLI feature that may allow a local attacker with administrative access to execute arbitrary command...

CVE-2026-20016: Improper Neutralization of Argument Delimiters in a Command

A vulnerability in the Cisco FXOS Software CLI feature for Cisco Secure Firewall ASA Software and Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit this vulnerability, the attack...

CVE-2026-20099

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...

EUVD-2026-8670

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

CVE-2026-20099

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...

CVE-2026-20091

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

CVE-2026-20099

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...

CVE-2026-20099

The CVE affects the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software. A vulnerability arises from insufficient input validation of user-supplied command arguments in the management interface, permitting an authenticated local attacker with administrative privil...

CVE-2026-20099 Cisco UCS Manager and FXOS Software Command Injection Vulnerability

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...

CVE-2026-20099 Cisco UCS Manager and FXOS Software Command Injection Vulnerability

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...

CVE-2026-20091

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

CVE-2026-20091 Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

CVE-2026-20091

CVE-2026-20091 affects Cisco FXOS Software and Cisco UCS Manager Software via the web-based management interface. The issue is a stored cross-site scripting flaw caused by insufficient input validation in the interface, allowing an authenticated attacker with Administrator/AAA Administrator crede...

Cisco FXOS and UCS Manager Software Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

PT-2026-21951

Name of the Vulnerable Software and Affected Versions Cisco FXOS Software affected versions not specified Cisco UCS Manager Software affected versions not specified Description A flaw exists in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software that could all...

CVE-2026-20091: Improper Neutralization of Input During Web Page Generation

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of...

CVE-2026-20099: Improper Neutralization of Special Elements used in an OS Command

A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, local attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. This vulnerability is...