CVE-2020-25036Public exploitNetwork attack vector

Authenticated command execution via unrestricted less pager

Published Feb 2, 2021 · Updated Aug 4, 2024

Restricted-shell escape in UCOPIA Wi-Fi appliances 6.0.5 allows remote authenticated users to execute commands as the admin user. The showDhcpLeases CLI action launches less without disabling its shell-command feature, so !rbash followed by sh escapes the restricted interface. Access to the administrative CLI is required, and successful exploitation grants an unrestricted admin-user shell inside the appliance chroot.

CVSS severity8.8
High
EPSS probability2.04%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Restricted-shell escape in UCOPIA Wi-Fi appliances 6.0.5 allows remote authenticated users to execute commands as the admin user. The showDhcpLeases CLI action launches less without disabling its shell-command feature, so !rbash followed by sh escapes the restricted interface. Access to the administrative CLI is required, and successful exploitation grants an unrestricted admin-user shell inside the appliance chroot.

The record

CVE
CVE-2020-25036
Published
Feb 2, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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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