CVE-2019-20783Network attack vector

LTE AKA authentication bypass

Published Apr 17, 2020 · Updated Aug 5, 2024

Authentication bypass in LG mobile devices on Android 7.0, 7.1, 7.2, 8.0, and 8.1 allows attackers to bypass LTE AKA via unspecified vectors. The public record identifies the LTE protocol implementation as the locus but does not disclose the faulty operation or attacker input that defeats AKA. Exposure is limited to North American CDMA software, and the published sources do not specify the resulting access or data impact.

CVSS severity9.1
Critical
EPSS probability0.43%
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 on Android 7.0, 7.1, 7.2, 8.0, and 8.1 allows attackers to bypass LTE AKA via unspecified vectors. The public record identifies the LTE protocol implementation as the locus but does not disclose the faulty operation or attacker input that defeats AKA. Exposure is limited to North American CDMA software, and the published sources do not specify the resulting access or data impact.

The record

CVE
CVE-2019-20783
Published
Apr 17, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
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

6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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