CVE-2022-20804— Cisco Unified Communications Products Denial of Service Vulnerability
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I. Basic Information for CVE-2022-20804
Vulnerability Information
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Vulnerability Title
Cisco Unified Communications Products Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Cisco Discovery Protocol of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, adjacent attacker to cause a kernel panic on an affected system, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by continuously sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a kernel panic on the system that is running the affected software, resulting in a DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对因果或异常条件的不恰当检查
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Unified Communications Manager 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Unified Communications Manager（CUCM，Unified CM，CallManager）是美国思科（Cisco）公司的一款统一通信系统中的呼叫处理组件。该组件提供了一种可扩展、可分布和高可用的企业IP电话呼叫处理解决方案。 Cisco Unified Communications Manager 和 Cisco Unified Communications Manager SME 存在代码问题漏洞，该漏洞源于不正确地处理某些 Cisco 发现协议数据包。攻击者利用
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 Unified Communications Manager | n/a | - |
II. Public POCs for CVE-2022-20804
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucm-dos-zHS9X9kDvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2022-20804
Same Patch Batch · Cisco · 2022-04-21 · 12 CVEs total
| CVE-2022-20732 | 7.8 HIGH | Cisco Virtualized Infrastructure Manager Privilege Escalation Vulnerability |
| CVE-2022-20783 | 7.5 HIGH | Cisco TelePresence Collaboration Endpoint and RoomOS Software H.323 Denial of Service Vuln |
| CVE-2022-20773 | 7.5 HIGH | Cisco Umbrella Virtual Appliance Static SSH Host Key Vulnerability |
| CVE-2022-20790 | 6.5 MEDIUM | Cisco Unified Communications Products Arbitrary File Read Vulnerability |
| CVE-2022-20778 | 6.1 MEDIUM | Cisco Webex Meetings Cross-Site Scripting Vulnerability |
| CVE-2022-20788 | 6.1 MEDIUM | Cisco Unified Communications Products Cross-Site Scripting Vulnerability |
| CVE-2022-20795 | 5.8 MEDIUM | Cisco Adaptive Security Appliance and Cisco Firepower Threat Defense Software AnyConnect S |
| CVE-2022-20787 | 5.7 MEDIUM | Cisco Unified Communications Products Cross-Site Request Forgery Vulnerability |
| CVE-2022-20786 | 5.4 MEDIUM | Cisco Unified Communications Manager IM & Presence Service SQL Injection Vulnerability |
| CVE-2022-20789 | 4.9 MEDIUM | Cisco Unified Communications Products Arbitrary File Write Vulnerability |
| CVE-2022-20805 | 4.1 MEDIUM | Cisco Umbrella Secure Web Gateway File Decryption Bypass Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco Unified Communications Manager
- CVE-2026-20045
Cisco Unified Communications Products Remote Code Execution - CVE-2025-20361
Cisco Unified Communications Manager Stored Cross-Site Scrip - CVE-2025-20326
Cisco Unified Communications Manager Cross-Site Request Forg - CVE-2025-20309
Cisco Unified Communications Manager Static SSH Credentials - CVE-2020-3420
Cisco Unified Communications Manager Stored Cross-Site Scrip
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-754
- CVE-2026-41662
Admidio: Missing Minimum Administrator Check in Role Members - CVE-2026-35225
Improper timeout handling in CODESYS EtherNetIP - CVE-2026-35366
uutils coreutils printenv Security Inspection Bypass via UTF - CVE-2026-40343
free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPos - CVE-2026-40249
free5gc UDR fail-open request handling in PolicyDataSubsToNo
V. Comments for CVE-2022-20804
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