CVE-2021-21737

Desktop tampering via insufficient system application protection

Published Jun 24, 2021 · Updated Aug 3, 2024

Permission failure in ZTE ZXV10 B860H V5.0 builds V83011303.0010 and V83011303.0016 allows attackers to alter its system desktop. Insufficient protection of an undisclosed system application permits unauthorized changes to the desktop and its customization functions. Exploitation requires low-privileged access from an adjacent network, and ZTE has not disclosed the affected application or permission check.

CVSS severity6.8
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Permission failure in ZTE ZXV10 B860H V5.0 builds V83011303.0010 and V83011303.0016 allows attackers to alter its system desktop. Insufficient protection of an undisclosed system application permits unauthorized changes to the desktop and its customization functions. Exploitation requires low-privileged access from an adjacent network, and ZTE has not disclosed the affected application or permission check.

The record

CVE
CVE-2021-21737
Published
Jun 24, 2021
Updated
Aug 3, 2024
Vendor
ZTE Corporation
Product
ZXV10 B860H V5.0
Classifications
CWE-276, T1565.001
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=V83011303.0010,V83011303.0016

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

ZTE Corporation · ZXV10 B860H V5.0version=V83011303.0010,V83011303.0016

Published CVSS scores

5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:N/I:P/A:N
6.8ZTE CorporationCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.

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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1565.001Stored Data Manipulation

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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