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CVE-2025-20339— Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability

Quick assessment

Affected
Cisco Cisco SD-WAN vEdge Cloud
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 SD-WAN vEdge是美国思科（Cisco）公司的一款路由器。 Cisco SD-WAN vEdge存在访问控制错误漏洞，该漏洞源于IPv4数据包访问控制列表处理不当，可能导致远程攻击者绕过配置的ACL。

CVSS 5.8 · Medium EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1562.008
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I. Basic Information for CVE-2025-20339

Vulnerability Information
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Vulnerability Title
Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the access control list (ACL) processing of IPv4 packets of Cisco SD-WAN vEdge Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the improper enforcement of the implicit deny all at the end of a configured ACL. An attacker could exploit this vulnerability by attempting to send unauthorized traffic to an interface on an affected device. A successful exploit could allow the attacker to bypass an ACL on 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:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco SD-WAN vEdge 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco SD-WAN vEdge是美国思科（Cisco）公司的一款路由器。 Cisco SD-WAN vEdge存在访问控制错误漏洞，该漏洞源于IPv4数据包访问控制列表处理不当，可能导致远程攻击者绕过配置的ACL。
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 SD-WAN vEdge Cloud 20.9.1 -
Cisco Cisco SD-WAN vEdge Router 20.3.1 -

II. Public POCs for CVE-2025-20339

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III. Intelligence Information for CVE-2025-20339

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Same Patch Batch · Cisco · 2025-09-24 · 17 CVEs total

CVE-2025-20334 8.8 HIGH Cisco IOS XE 命令注入漏洞
CVE-2025-20315 8.6 HIGH Cisco IOS XE 安全漏洞
CVE-2025-20160 8.1 HIGH Cisco IOS和Cisco IOS XE Software 授权问题漏洞
CVE-2025-20327 7.7 HIGH Cisco IOS 安全漏洞
CVE-2025-20312 7.7 HIGH Cisco IOS XE 安全漏洞
CVE-2025-20352 7.7 HIGH Cisco IOS和Cisco IOS XE Software 安全漏洞
CVE-2025-20311 7.4 HIGH Cisco IOS XE Software 代码问题漏洞
CVE-2025-20314 6.7 MEDIUM Cisco IOS XE 安全漏洞
CVE-2025-20313 6.7 MEDIUM Cisco IOS XE 安全漏洞
CVE-2025-20149 6.5 MEDIUM Cisco IOS和Cisco IOS XE 安全漏洞
CVE-2025-20240 6.1 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2025-20338 6.0 MEDIUM Cisco IOS XE 安全漏洞
CVE-2025-20316 5.3 MEDIUM Cisco IOS XE 访问控制错误漏洞
CVE-2025-20293 5.3 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2025-20365 4.3 MEDIUM Cisco Access Point Software 安全漏洞
CVE-2025-20364 4.3 MEDIUM Cisco Wireless LAN Controller 安全漏洞

IV. Related Vulnerabilities

Same product: Cisco SD-WAN vEdge Cloud
Same vendor: Cisco
Same weakness: CWE-284

V. Comments for CVE-2025-20339

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