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CVE-2025-20336— Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure Vulnerability

Quick assessment

Affected
Cisco Cisco Session Initiation Protocol (SIP) 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 IP Phone等都是美国思科（Cisco）公司的产品。Cisco IP Phone是一个硬件设备。Cisco Video Phone是一款 IP 电话。Cisco Desk Phone是一款桌面电话。 Cisco多款产品存在信息泄露漏洞，该漏洞源于敏感信息暴露，可能导致信息泄露。以下产品受到影响：Cisco Desk Phone 9800 Series、Cisco IP Phone 7800、8800 Series和Cisco Video Phone 8875。

CVSS 5.3 · Medium EPSS 0.39% · P30
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I. Basic Information for CVE-2025-20336

Vulnerability Information
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Vulnerability Title
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability exists because the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. An attacker could exploit this vulnerability by sending a crafted packet to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information from the device. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco多款产品 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IP Phone等都是美国思科（Cisco）公司的产品。Cisco IP Phone是一个硬件设备。Cisco Video Phone是一款 IP 电话。Cisco Desk Phone是一款桌面电话。 Cisco多款产品存在信息泄露漏洞，该漏洞源于敏感信息暴露，可能导致信息泄露。以下产品受到影响：Cisco Desk Phone 9800 Series、Cisco IP Phone 7800、8800 Series和Cisco Video Phone 8875。
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 Session Initiation Protocol (SIP) Software 12.1(1)SR1 -

II. Public POCs for CVE-2025-20336

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III. Intelligence Information for CVE-2025-20336

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Vendor Advisories for CVE-2025-20336 (1)

Same Patch Batch · Cisco · 2025-09-03 · 9 CVEs total

CVE-2025-20330 6.1 MEDIUM Cisco Unified Communications Manager IM and Presence Cross-Site Scripting Vulnerability
CVE-2025-20328 5.4 MEDIUM Cisco Webex Meetings 跨站脚本漏洞
CVE-2025-20335 5.3 MEDIUM Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP
CVE-2025-20280 4.8 MEDIUM Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure Stored Cross-Sit
CVE-2025-20270 4.3 MEDIUM Cisco Evolved Programmable Network Manager Information Disclosure Vulnerability
CVE-2025-20287 4.3 MEDIUM Cisco Evolved Programmable Network Manager Arbitrary File Upload Vulnerability
CVE-2025-20326 4.3 MEDIUM Cisco Unified Communications Manager Cross-Site Request Forgery Vulnerability
CVE-2025-20291 4.3 MEDIUM Cisco Webex Meetings 输入验证错误漏洞

IV. Related Vulnerabilities

Same product: Cisco Session Initiation Protocol (SIP) Software
Same vendor: Cisco
Same weakness: CWE-200

V. Comments for CVE-2025-20336

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