CVE-2020-3920Network attack vector

Privileged account management via missing page authentication

Published Mar 27, 2020 · Updated Sep 17, 2024

Missing authentication in the Unisoon UltraLog Express 1.4.0 management interface allows remote authenticated users to manage accounts. Requests routed through an undisclosed system directory reach privileged account-management pages without the access authentication those functions require. Low-privileged network access is sufficient, and the documented consequence is unauthorized control of device account management.

CVSS severity8.1
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the Unisoon UltraLog Express 1.4.0 management interface allows remote authenticated users to manage accounts. Requests routed through an undisclosed system directory reach privileged account-management pages without the access authentication those functions require. Low-privileged network access is sufficient, and the documented consequence is unauthorized control of device account management.

The record

CVE
CVE-2020-3920
Published
Mar 27, 2020
Updated
Sep 17, 2024
Vendor
Unisoon
Product
UltraLog Express
Classifications
CWE-306, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Unisoon · UltraLog Expressversion=1.4.0

Published CVSS scores

8.1TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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