CVE-2020-6867

Local controller hang via repeated RPC calls

Published Apr 30, 2020 · Updated Aug 4, 2024

Resource-management error in ZTE ZENIC ONE R22b allows local users to hang the controller through repeated RPC calls. ZTE has not disclosed the affected RPC handler or the precise resource operation; it reports prolonged nonresponse and memory-overflow risk when other applications call RPC frequently during mass traffic. Low-privilege local access and mass traffic are required, and the affected releases are V16.19.10P02SP002 and V16.19.10P02SP005.

CVSS severity5.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-management error in ZTE ZENIC ONE R22b allows local users to hang the controller through repeated RPC calls. ZTE has not disclosed the affected RPC handler or the precise resource operation; it reports prolonged nonresponse and memory-overflow risk when other applications call RPC frequently during mass traffic. Low-privilege local access and mass traffic are required, and the affected releases are V16.19.10P02SP002 and V16.19.10P02SP005.

The record

CVE
CVE-2020-6867
Published
Apr 30, 2020
Updated
Aug 4, 2024
Vendor
ZTE Corporation
Product
ZENIC ONE R22
Classifications
CWE-119, T1499.003
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2020CVE 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?

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  1. Affected versionversion=V16.19.10P02SP002
  2. Affected versionversion=V16.19.10P02SP005

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ZTE Corporation · ZENIC ONE R22version=V16.19.10P02SP002; version=V16.19.10P02SP005

Published CVSS scores

5.5ZTE CorporationCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.003Application Exhaustion Flood

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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