Cisco on Wednesday informed customers about the availability of patches for two high-severity vulnerabilities affecting components of its Application Centric Infrastructure (ACI) software-defined networking solution.
One of these flaws, CVE-2023-20011, impacts the management interface of the Cisco Application Policy Infrastructure Controller (APIC) and Cloud Network Controller. APIC is the unified point of automation and management for ACI.
The vulnerability can be exploited by a remote, unauthenticated attacker to conduct cross-site request forgery (CSRF) attacks by tricking a user into clicking on a malicious link. The attacker could then conduct activities on the targeted system with the privileges of the compromised user.
The second high-severity issue, CVE-2023-20089, affects Cisco Nexus 9000 series Fabric switches in ACI mode, and it can be exploited for denial-of-service (DoS) attacks by an unauthenticated, adjacent attacker. The vendor noted that certain conditions need to be met for exploitation.
Both security holes were discovered internally and there is no evidence of malicious exploitation.
In addition, Cisco has patched medium-severity flaws in several products, including a UCS Manager and FXOS software issue that exposes backup files, a command injection bug in NX-OS, a command injection in Firepower appliances, and an authentication bypass vulnerability in Nexus extenders (requires physical access).
The networking giant has also released an informational advisory for a privilege escalation issue related to products running NX-OS software and configured for SSH authentication with an X.509v3 certificate.
Cisco on Wednesday also updated its advisory for CVE-2023-20032, a recently addressed critical vulnerability affecting the ClamAV library. The company has informed customers about the availability of technical information describing CVE-2023-20032, and the existence of a proof-of-concept (PoC) exploit. There is currently no evidence of malicious exploitation.
Additional information can be found in Cisco’s security advisories.
Related: Flaw in Cisco Industrial Appliances Allows Malicious Code to Persist Across Reboots
Related: Cisco Patches High-Severity SQL Injection Vulnerability in Unified CM
Related: Cisco Warns of Critical Vulnerability in EoL Small Business Routers

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.
More from Eduard Kovacs
- Intel Boasts Attack Surface Reduction With New 13th Gen Core vPro Platform
- Dole Says Employee Information Compromised in Ransomware Attack
- High-Severity Vulnerabilities Found in WellinTech Industrial Data Historian
- CISA Expands Cybersecurity Committee, Updates Baseline Security Goals
- Exploitation of 55 Zero-Day Vulnerabilities Came to Light in 2022: Mandiant
- Organizations Notified of Remotely Exploitable Vulnerabilities in Aveva HMI, SCADA Products
- Waterfall Security, TXOne Networks Launch New OT Security Appliances
- Hitachi Energy Blames Data Breach on Zero-Day as Ransomware Gang Threatens Firm
Latest News
- Microsoft: No-Interaction Outlook Zero Day Exploited Since Last April
- US to Adopt New Restrictions on Using Commercial Spyware
- Hackers Earn Over $1 Million at Pwn2Own Exploit Contest
- GoAnywhere Zero-Day Attack Hits Major Orgs
- Australia Dismantles BEC Group That Laundered $1.7 Million
- ‘Grim’ Criminal Abuse of ChatGPT is Coming, Europol Warns
- Webinar Tomorrow: Understanding Hidden Third-Party Identity Access Risks
- GitHub Rotates Publicly Exposed RSA SSH Private Key
