CVE-2020-8790Network attack vector

Credential takeover via unrestricted brute force

Published May 4, 2020 · Updated Aug 4, 2024

Authentication weakness in OKLOK 3.1.1 allows remote attackers to discover user credentials and obtain account access via brute force. The mobile companion app combines weak password requirements with inadequate throttling or restriction of repeated authentication attempts, allowing systematic guessing of credentials. Successful guessing grants access to the victim account; exploitation requires network reachability to the app's authentication service and produces confidentiality and integrity consequences.

CVSS severity9.8
Critical
EPSS probability1.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication weakness in OKLOK 3.1.1 allows remote attackers to discover user credentials and obtain account access via brute force. The mobile companion app combines weak password requirements with inadequate throttling or restriction of repeated authentication attempts, allowing systematic guessing of credentials. Successful guessing grants access to the victim account; exploitation requires network reachability to the app's authentication service and produces confidentiality and integrity consequences.

The record

CVE
CVE-2020-8790
Published
May 4, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, CWE-307, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 4, 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 NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

CWE-521Weak Password Requirements
CWE-307Improper Restriction of Excessive Authentication Attempts
T1110Brute Force

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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