CVE-2019-20771Network attack vector

Unauthorized configuration changes via unauthenticated OMACP messages

Published Apr 17, 2020 · Updated Aug 5, 2024

Authentication bypass in LG mobile devices running Android 7.0 through 9.0 allows remote attackers to alter settings via OMACP messages. WapService does not authenticate the sender of modified OMA Client Provisioning messages, allowing proxy, homepage, bookmark, and other settings to masquerade as carrier configuration. The attack requires acceptance of the provisioning prompt; accepted settings can route device traffic through an attacker-controlled proxy.

CVSS severity7.5
High
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

Authentication bypass in LG mobile devices running Android 7.0 through 9.0 allows remote attackers to alter settings via OMACP messages. WapService does not authenticate the sender of modified OMA Client Provisioning messages, allowing proxy, homepage, bookmark, and other settings to masquerade as carrier configuration. The attack requires acceptance of the provisioning prompt; accepted settings can route device traffic through an attacker-controlled proxy.

The record

CVE
CVE-2019-20771
Published
Apr 17, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1660
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/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.

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

No observations available

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

Weakness, pattern, technique

T1660Phishing

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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