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CVE-2026-20262— Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability

Quick assessment

Affected
Cisco Cisco Catalyst SD-WAN Manager
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Catalyst SD-WAN Manager是美国Cisco公司的一个高度可定制的仪表板。 可简化和自动化 Cisco SD-WAN 的部署、配置、管理和操作。 Cisco Catalyst SD-WAN Manager存在路径遍历漏洞，该漏洞源于在上传文件过程中未正确验证用户提供的输入，可能导致经过身份验证的远程攻击者创建或覆盖受影响系统文件系统上的任意文件，并可被用于提升至root权限。

CVSS 6.5 · Medium KEV EPSS 28.17% · P98

Affected Version Matrix 376

VendorProduct Version RangeStatus
Cisco Cisco Catalyst SD-WAN Manager 20.1.12 affected
19.2.1 affected
18.4.4 affected
18.4.5 affected
20.1.1.1 affected
20.1.1 affected
19.3.0 affected
19.2.2 affected
… +368 more rows
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I. Basic Information for CVE-2026-20262

Vulnerability Information
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Vulnerability Title
Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Catalyst SD-WAN Manager 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Catalyst SD-WAN Manager是美国Cisco公司的一个高度可定制的仪表板。 可简化和自动化 Cisco SD-WAN 的部署、配置、管理和操作。 Cisco Catalyst SD-WAN Manager存在路径遍历漏洞，该漏洞源于在上传文件过程中未正确验证用户提供的输入，可能导致经过身份验证的远程攻击者创建或覆盖受影响系统文件系统上的任意文件，并可被用于提升至root权限。
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 Catalyst SD-WAN Manager 20.1.12 -

II. Public POCs for CVE-2026-20262

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III. Intelligence Information for CVE-2026-20262

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Vendor Advisories for CVE-2026-20262 (1)

IV. Related Vulnerabilities

Same product: Cisco Catalyst SD-WAN Manager
Same vendor: Cisco
Same weakness: CWE-22

V. Comments for CVE-2026-20262

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