CVE-2020-26071

highpriority · track · 0EPSS 0.002 · 9 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.19% (9th) EPSS

CVSS 8.4 · high

Is it mine?

197 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Catalyst SD-WAN Managercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vContainercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vEdge Cloudcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vEdge Routercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

8.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.4highAV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/RL:X/RC:X/E:Xsecondary · ENISA EU

v3.18.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · psirt@cisco.com USexploitability 2 · impact 5.8

v3.17.7highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USCWE-22US

affected products (197)

Products and version ranges known to be affected.

Cisco Cisco Catalyst SD-WAN Managerall versionscisco_csafUS
Cisco Cisco SD-WAN vContainerall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Cloudall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Routerall versionscisco_csafUS
Cisco Cisco Catalyst SD-WAN Manager≤ 18.3.6.1enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.3.3.1enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.2.3enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.4.0.1enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.2.097enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.4.303enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.3.0enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.3.5enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.3.7enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 17.2.4enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 17.2.7enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.2.099enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.3.6enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.0.1aenisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 18.4.5enisa_euvdEU
Cisco Cisco Catalyst SD-WAN Manager≤ 19.2.098enisa_euvdEU

showing 20 of 197

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-vsoln-arbfile-gtsEYxnsCisco SD-WAN Software Arbitrary File Creation Vulnerability2020-11-04csaf · cisco_csafUS
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.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf NVD CVE.org MITRE

published 2024-11-18modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan