CVE-2022-20818

Root command execution via CLI path traversal

Published Sep 30, 2022 · Updated Feb 26, 2026

Path traversal in the Cisco SD-WAN Software CLI allows local users to execute arbitrary commands as root via a malicious CLI command. The CLI improperly authorizes commands containing ../ path traversal sequences instead of confining their path access to the intended directory. An authenticated local CLI account is required; successful exploitation grants root command execution on the affected system.

CVSS severity7.8
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the Cisco SD-WAN Software CLI allows local users to execute arbitrary commands as root via a malicious CLI command. The CLI improperly authorizes commands containing ../ path traversal sequences instead of confining their path access to the intended directory. An authenticated local CLI account is required; successful exploitation grants root command execution on the affected system.

The record

CVE
CVE-2022-20818
Published
Sep 30, 2022
Updated
Feb 26, 2026
Vendor
ClamAV
Product
Cisco SD-WAN
Classifications
CWE-25, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco SD-WANversion=n/a

Published CVSS scores

7.8Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-25Path Traversal: '/../filedir'
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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