CVE-2026-20035— Cisco Unity Connection Server-Side Request Forgery Vulnerability
Quick assessment
Affected
Cisco Cisco Unity Connection
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 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。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 21
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco Unity Connection | 12.5(1) |
affected |
12.5(1)SU1 |
affected | ||
12.5(1)SU2 |
affected | ||
12.5(1)SU3 |
affected | ||
12.5(1)SU4 |
affected | ||
14 |
affected | ||
12.5(1)SU5 |
affected | ||
14SU1 |
affected | ||
| … +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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Unity Connection | 12.5(1) | - |
|
II. Public POCs for CVE-2026-20035
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-20035 (1)
Same Patch Batch · Cisco · 2026-05-06 · 12 CVEs total
| CVE-2026-20034 | 8.8 HIGH | Cisco Unity Connection Remote Code Execution Vulnerability |
| CVE-2026-20185 | 7.7 HIGH | Cisco SG350 and SG350X Series Managed Switches SNMP Denial of Service Vunerability |
| CVE-2026-20167 | 7.7 HIGH | Cisco IoT Field Network Director Remote Device Denial of Service Vulnerability |
| CVE-2026-20168 | 6.5 MEDIUM | Cisco IoT Field Network Director Path Traversal Vulnerability |
| CVE-2026-20169 | 6.4 MEDIUM | Cisco IoT Field Network Director Command Injection Vulnerability |
| CVE-2026-20219 | 5.4 MEDIUM | Cisco Slido 安全漏洞 |
| CVE-2026-20195 | 5.3 MEDIUM | Cisco Identity Services Engine Observable Response Discrepancy Vulnerability |
| CVE-2026-20193 | 4.3 MEDIUM | Cisco Identity Services Engine Authentication Bypass Vulnerability |
| CVE-2026-20189 | 4.3 MEDIUM | Cisco Prime Infrastructure Information Disclosure Vulnerability |
| CVE-2026-20172 | 4.3 MEDIUM | Cisco Enterprise Chat and Email Lite Agent File Upload Vulnerability |
| CVE-2026-20188 | Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory |
IV. Related Vulnerabilities
Same product: Cisco Unity Connection
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V. Comments for CVE-2026-20035
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