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Cisco
3,476 known vulnerabilities.
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Critical 9.8
Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authentication for Critical Function
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple in…
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Critical 9.6
Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Protection Mechanism Failure Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has con…
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Critical 9.9
Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) engineering teams have conducted a comprehensive internal security review. This review…
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Critical 9.0
Cisco Secure Firewall Management Center Software Impersonated sftunnel Connection Vulnerability
A vulnerability in the internal configuration of the Apache JServ Protocol (AJP) connector for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to impersonate a peer device. This vulnerability is due to incorrect initialization o…
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Critical 9.9
Cisco Identity Services Engine Remote Code Execution Vulnerability
A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at l…
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Critical 9.1
Cisco Identity Services Engine Command Injection Vulnerability
A vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the atta…
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Critical 9.1
Cisco Identity Services Engine Command Injection Vulnerability
A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must hav…
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Critical 9.8
Cisco Secure Email Gateway SQL Injection Vulnerability
A vulnerability in the email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system. This vulnerability is due to i…
KEV Sep 14, 2026 -
Critical 9.8CVE-2026-76443 Public exploit
Cisco Secure Email Gateway Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software ha…
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Critical 9.8
Cisco Secure Email Gateway Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software ha…
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Critical 9.8
Cisco Secure Email Gateway Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software ha…
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Critical 9.8
Cisco Secure Email Gateway Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software ha…
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Critical 9.8
Cisco IOS XR Software Security Hardening Release: September 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple int…
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Critical 9.8
Cisco IOS XR Software Security Hardening Release: September 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple int…
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Critical 9.8CVE-2026-20212 Public exploit
Cisco Nexus 3000 and 9000 Series Switches Silicon One Hardware Abstraction Layer Remote Code Execution Vulnerability
A vulnerability in the Silicon One integration for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute code with root privileges. This vulnerability exists because TCP ports 43210 and 43211 are accessible in the de…
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Critical 10.0
Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Access Control Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple in…
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Critical 10.0
Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Authentication Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple in…
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Critical 9.6
Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Input Validation Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple in…
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Critical 9.9
Cisco Crosswork Security Hardening Release: August 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internal…
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Critical 10.0
Cisco Crosswork Security Hardening Release: August 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internal…
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Critical 10.0
Cisco Crosswork Security Hardening Release: August 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internal…
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Critical 9.9
Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Neutralization of Special Elements Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple in…
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Critical 10.0
Cisco Crosswork Security Hardening Release: August 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internal…
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Critical 9.1
Cisco SD-WAN Software Security Hardening Release - Improper Link Resolution Before File Access
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple inter…
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Critical 9.9CVE-2026-20303 Public exploit
Cisco Catalyst SD-WAN Security Hardening Release - Input Validation Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple inter…
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Critical 9.9
Cisco Catalyst SD-WAN Security Hardening Release - Access Control Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that address multiple inte…
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Critical 9.8
Cisco IOS XE Software Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple inter…
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Critical 9.0
Cisco IOS XE Software Security Hardening Release
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple inter…
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Critical 9.1
Cisco Identity Services Engine Remote Code Execution Vulnerability
A vulnerability in Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid administrative credentia…
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Critical 10.0CVE-2026-20223 Public exploit
Cisco Secure Workload Unauthorized API Access Vulnerability
A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role. This vulnerability is due to insufficient va…
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Critical 10.0
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The secti…
KEV May 14, 2026 -
Critical 9.8
Cisco Webex Meetings Certificate Validation Vulnerability
A vulnerability in the integration of single sign-on (SSO) with Control Hub in Cisco Webex Services could have allowed an unauthenticated, remote attacker to impersonate any user within the service. This vulnerability existed because of improper certificate v…
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Critical 9.9CVE-2026-20180 Public exploit
Cisco Identity Services Engine Multiple Remote Code Execution Vulnerability
A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read O…
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Critical 9.9
Cisco Identity Services Engine Multiple Authenticated Remote Code Execution Vulnerability
A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read O…
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Critical 9.9CVE-2026-20147 EPSS 11%
Cisco Identity Services Engine Remote Code Execution Vulnerability
A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid administrative cre…
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Critical 9.8
Cisco Smart Software Manager On-Prem Arbitrary Command Execution Vulnerability
A vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected SSM On-Prem host. This vulnerability is due to the unintentio…
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Critical 9.8
Cisco Integrated Management Controller Authentication Bypass Vulnerability
A vulnerability in the change password functionality of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to bypass authentication and gain access to the system as Admin. This vulnerability is due to incorrect h…
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Critical 10.0
Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. This vulnerability is due to ins…
KEV Mar 19, 2026 -
Critical 10.0
Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying oper…
KEV Sep 9, 2026 -
Critical 10.0
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remo…
KEV Feb 25, 2026