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    CVE-2026-20304

    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 internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20304 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.

    Published:Aug 5, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 5, 2026
    EPSS Score:0.00254
    CVSS Score:9.9

    Affected Products

    Vendor
    Cisco
    Product
    Catalyst Sd-wan Manager
    Vendor
    Cisco
    Product
    Cisco Catalyst Sd-wan Controller

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

    CVE-2026-20313 (CVSS 7.7) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN eng…
    CVE-2026-20312 (CVSS 8.8) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN eng…
    CVE-2026-20310 (CVSS 9.1) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN eng…
    CVE-2026-20303 (CVSS 9.9) — As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN eng…
    CVE-2026-20294 (CVSS 6.5) — A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenti…
    CVE-2026-20262 (CVSS 6.5) — A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authen…
    CVE-2026-20245 (CVSS 7.8) — A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN …
    CVE-2026-20224 (CVSS 8.6) — A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauth…
    CVE-2026-20210 (CVSS 5.4) — A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authen…
    CVE-2026-20209 (CVSS 5.4) — A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authen…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High