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Cisco disclosed multiple vulnerabilities in its Integrated Management Controller (IMC), including the critical CVE-2026-20093, which allows a remote, unauthenticated attacker to send a crafted HTTP request to bypass authentication and change passwords for existing users, including the primary Admin account. Cisco rated the flaw CVSS 9.8 and said no workarounds or mitigations are available, making vendor-issued software updates the only effective fix; the company added that it has no evidence of active exploitation or public malicious use.
Additional advisories cover CVE-2026-20094 through CVE-2026-20097, spanning command injection and arbitrary code execution issues that could let attackers execute commands or code as root and fully compromise affected systems. Impacted products include Cisco UCS C-Series and S-Series servers, UCS E-Series systems, Catalyst 8300 Series Edge uCPE, 5000 Series ENCS, and other Cisco appliances built on vulnerable UCS platforms, with Cisco publishing fixed-version guidance and upgrade paths while runZero released an inventory query to help organizations identify exposed IMC assets.
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5 events from the most recent confirmed update back to the earliest known activity.
Cisco released fixes for additional vulnerabilities beyond IMC, including critical CVE-2026-20160 in Smart Software Manager On-Prem that could allow remote command execution as root, plus high-severity flaws affecting SSM On-Prem and Evolved Programmable Network Manager. Cisco PSIRT said it was not aware of active exploitation or public proof-of-concept code for these issues at disclosure time.
runZero published analysis of the Cisco IMC advisories along with a software inventory query to help organizations identify potentially vulnerable Cisco IMC assets. The guidance covered affected Cisco UCS servers, NFVIS releases, and appliances built on vulnerable UCS platforms.
In its disclosure, Cisco stated it had no evidence that the IMC vulnerabilities were being actively exploited or used maliciously in public at the time of publication. This applied to the newly disclosed flaws, including the critical password-change bypass issue.
Cisco released fixed software and version guidance to address the IMC vulnerabilities, including the critical CVE-2026-20093 authentication bypass rated CVSS 9.8. Cisco said no workarounds or mitigations were available and that vendor-provided updates were the only effective remediation.
Cisco disclosed two security advisories for five vulnerabilities in its Integrated Management Controller (IMC): CVE-2026-20093, CVE-2026-20094, CVE-2026-20095, CVE-2026-20096, and CVE-2026-20097. The issues included an unauthenticated password-change authentication bypass, command injection flaws, and an arbitrary code execution vulnerability affecting various UCS-based platforms and appliances.
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Cisco disclosed a broad set of security flaws across enterprise products, including critical unauthenticated remote code execution, arbitrary command execution, and authentication bypass vulnerabilities affecting **Smart Software Manager On-Prem**, **Integrated Management Controller**, **Nexus Dashboard Fabric Controller**, and **Secure Firewall Management Center**. Additional high- and medium-severity issues impact **IOS XE** and other Cisco platforms, enabling denial of service, privilege escalation, arbitrary file write, server-side request forgery, secure boot bypass, sensitive information exposure, and cross-site scripting. Many of the vulnerabilities affect web-based management interfaces and network-facing services, raising the risk to remotely reachable administrative systems. One of the most severe issues, **`CVE-2026-20223`**, affects **Cisco Secure Workload** and allows an unauthenticated attacker to bypass REST API authentication and perform administrative actions. The flaw, tracked as **CWE-306** and rated **CVSS 10.0**, can expose configuration data, alter microsegmentation policies, and enable cross-tenant access with Site Admin-level impact in both SaaS and on-premises deployments. Cisco said no workaround is available and released fixes in versions **3.10.8.3** and **4.0.3.17**; reporting cited no known active exploitation or public proof-of-concept at the time.
Jul 14, 2026
Cisco disclosed command injection and remote code execution vulnerabilities affecting **Cisco Integrated Management Controller (CIMC)**, warning that the flaws could allow an attacker to execute arbitrary commands or code on impacted systems. The advisory identifies the issue as affecting CIMC and frames it as a serious compromise path into server management infrastructure, where successful exploitation could give an attacker control over administrative functions and underlying devices. The vulnerabilities were published in a Cisco security advisory under the topic **"Cisco Integrated Management Controller Command Injection and Remote Code Execution Vulnerabilities."** Organizations using Cisco CIMC are expected to review the vendor advisory, determine whether exposed or internet-reachable management interfaces are affected, and apply Cisco-provided fixes or mitigations to reduce the risk of unauthorized command execution on management controllers.
Jun 29, 2026
Cisco disclosed two high-severity vulnerabilities in **Cisco Identity Services Engine (ISE)**, tracked as `CVE-2026-20180` and `CVE-2026-20186`, that allow an authenticated attacker to execute arbitrary commands on the underlying operating system by sending crafted HTTP requests. Both issues require at least **Read Only Admin** credentials and stem from insufficient validation of user-supplied input; Cisco mapped the flaws to **`CWE-22`** and **`CWE-77`** respectively. Cisco assigned both vulnerabilities the same **CVSS v3.1** score vector: `AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`. Successful exploitation can provide user-level operating system access and may allow attackers to escalate privileges to **root**. Cisco warned that in **single-node ISE deployments**, exploitation could also make the affected node unavailable, creating a denial-of-service condition that prevents unauthenticated endpoints from accessing the network until the system is restored.
Jun 29, 2026