CVE-2020-12752Network attack vector

Credential disclosure via inadequate Gatekeeper input validation

Published May 11, 2020 · Updated Aug 4, 2024

Improper input validation in Samsung mobile devices with TEEGRIS on Android 9.0 and 10.0 allows attackers to determine credentials via brute force. The Gatekeeper trustlet inadequately validates authentication input, permitting repeated guesses that defeat intended brute-force resistance. The affected device must use TEEGRIS, and successful exploitation discloses user credentials without reported integrity or availability impact.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Samsung mobile devices with TEEGRIS on Android 9.0 and 10.0 allows attackers to determine credentials via brute force. The Gatekeeper trustlet inadequately validates authentication input, permitting repeated guesses that defeat intended brute-force resistance. The affected device must use TEEGRIS, and successful exploitation discloses user credentials without reported integrity or availability impact.

The record

CVE
CVE-2020-12752
Published
May 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 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?

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:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

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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