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CVE-2026-20035— Cisco Unity Connection Server-Side Request Forgery Vulnerability

CVSS 7.2 · High EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 21

VendorProductVersion RangeStatus
CiscoCisco Unity Connection12.5(1)affected
12.5(1)SU1affected
12.5(1)SU2affected
12.5(1)SU3affected
12.5(1)SU4affected
14affected
12.5(1)SU5affected
14SU1affected
… +13 more rows
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I. Basic Information for CVE-2026-20035

Vulnerability Information
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Vulnerability Title
Cisco Unity Connection Server-Side Request Forgery Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Unity Connection Web Inbox 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Unity Connection Web Inbox是美国思科（Cisco）公司的一个语音邮件访问与管理界面。 Cisco Unity Connection Web Inbox存在代码问题漏洞，该漏洞源于对特定HTTP请求输入验证不当，可能导致未经身份验证的远程攻击者通过发送特制HTTP请求执行SSRF攻击。
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

VendorProductAffected VersionsCPESubscribe
CiscoCisco Unity Connection 12.5(1) -

II. Public POCs for CVE-2026-20035

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III. Intelligence Information for CVE-2026-20035

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Advisory · 1

Same Patch Batch · Cisco · 2026-05-06 · 12 CVEs total

CVE-2026-200348.8 HIGHCisco Unity Connection Remote Code Execution Vulnerability
CVE-2026-201857.7 HIGHCisco SG350 and SG350X Series Managed Switches SNMP Denial of Service Vunerability
CVE-2026-201677.7 HIGHCisco IoT Field Network Director Remote Device Denial of Service Vulnerability
CVE-2026-201686.5 MEDIUMCisco IoT Field Network Director Path Traversal Vulnerability
CVE-2026-201696.4 MEDIUMCisco IoT Field Network Director Command Injection Vulnerability
CVE-2026-202195.4 MEDIUMCisco Slido 安全漏洞
CVE-2026-201955.3 MEDIUMCisco Identity Services Engine Observable Response Discrepancy Vulnerability
CVE-2026-201934.3 MEDIUMCisco Identity Services Engine Authentication Bypass Vulnerability
CVE-2026-201894.3 MEDIUMCisco Prime Infrastructure Information Disclosure Vulnerability
CVE-2026-201724.3 MEDIUMCisco Enterprise Chat and Email Lite Agent File Upload Vulnerability
CVE-2026-20188Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory

IV. Related Vulnerabilities

Same product: Cisco Unity Connection
Same vendor: Cisco
Same weakness: CWE-918

V. Comments for CVE-2026-20035

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