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CVE-2026-20302— Cisco RoomOS Stack Overflow Vulnerability

Quick assessment

Affected
Cisco Cisco RoomOS Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco RoomOS Software是美国Cisco公司的一款视频会议软件。 Cisco RoomOS Software存在缓冲区错误漏洞，该漏洞源于USB驱动程序中特定数据的边界检查不足，可能导致未经身份验证的本地攻击者通过物理访问USB端口连接恶意USB设备，造成缓冲区溢出并以root权限执行任意代码。以下版本受到影响：RoomOS 10.11.2.2版本、RoomOS 10.15.2.2版本、RoomOS 11.5.4.6版本、RoomOS 11.5.2.4版本、RoomOS 10.8.2.5

CVSS 6.1 · Medium EPSS 0.18% · P7

Affected Version Matrix 72

VendorProduct Version RangeStatus
Cisco Cisco RoomOS Software RoomOS 10.11.2.2 affected
RoomOS 10.15.2.2 affected
RoomOS 11.5.4.6 affected
RoomOS 11.5.2.4 affected
RoomOS 10.8.2.5 affected
RoomOS 10.11.5.2 affected
RoomOS 10.11.3.0 affected
RoomOS 10.15.5.3 affected
… +64 more rows
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I. Basic Information for CVE-2026-20302

Vulnerability Information
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Vulnerability Title
Cisco RoomOS Stack Overflow Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is provided through the USB driver. An attacker could exploit this vulnerability by connecting a malicious USB device to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system and execute arbitrary code with root privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco RoomOS Software 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco RoomOS Software是美国Cisco公司的一款视频会议软件。 Cisco RoomOS Software存在缓冲区错误漏洞，该漏洞源于USB驱动程序中特定数据的边界检查不足，可能导致未经身份验证的本地攻击者通过物理访问USB端口连接恶意USB设备，造成缓冲区溢出并以root权限执行任意代码。以下版本受到影响：RoomOS 10.11.2.2版本、RoomOS 10.15.2.2版本、RoomOS 11.5.4.6版本、RoomOS 11.5.2.4版本、RoomOS 10.8.2.5
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco RoomOS Software RoomOS 10.11.2.2 -

II. Public POCs for CVE-2026-20302

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III. Intelligence Information for CVE-2026-20302

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Vendor Advisories for CVE-2026-20302 (1)

Same Patch Batch · Cisco · 2026-08-19 · 15 CVEs total

CVE-2026-20030 10.0 CRITICAL Cisco Crosswork Security Hardening Release: August 2026
CVE-2026-20358 10.0 CRITICAL Cisco Crosswork Security Hardening Release: August 2026
CVE-2026-20357 10.0 CRITICAL Cisco Crosswork Security Hardening Release: August 2026
CVE-2026-20317 10.0 CRITICAL Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Authentic
CVE-2026-20315 10.0 CRITICAL Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Access Co
CVE-2026-20231 9.9 CRITICAL Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Neutraliz
CVE-2026-20359 9.9 CRITICAL Cisco Crosswork Security Hardening Release: August 2026
CVE-2026-20318 9.6 CRITICAL Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Input Val
CVE-2026-20319 7.5 HIGH Cisco Secure Workload Software Security Hardening Release August 2026 - Buffer Management
CVE-2026-20320 7.5 HIGH Cisco BroadWorks 输入验证错误漏洞
CVE-2026-20327 6.5 MEDIUM Cisco Unified Intelligence Center SQL Injection Vulnerability
CVE-2026-20232 5.4 MEDIUM Cisco Industrial Ethernet 1000 Series Switches Stored Cross-Site Scripting Vulnerability
CVE-2026-20177 5.3 MEDIUM Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability
CVE-2026-20314 5.0 MEDIUM Cisco Packaged Contact Center Enterprise & Cisco Unified Contact Center Enterprise Server-

IV. Related Vulnerabilities

Same product: Cisco RoomOS Software
Same vendor: Cisco
Same weakness: CWE-120

V. Comments for CVE-2026-20302

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