CVE-2020-8827Network attack vector

Account compromise via unthrottled password attempts

Published Apr 8, 2020 · Updated Aug 4, 2024

Insufficient login-attempt restriction in Argo CD before 1.5.1 allows remote attackers to brute-force local account passwords. SessionManager.VerifyUsernamePassword accepted each non-SSO password attempt without tracking failures or delaying later attempts. No credentials are required to reach the network login interface; repeated guesses can compromise a local account and its authorized resources.

CVSS severity7.5
High
EPSS probability2.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient login-attempt restriction in Argo CD before 1.5.1 allows remote attackers to brute-force local account passwords. SessionManager.VerifyUsernamePassword accepted each non-SSO password attempt without tracking failures or delaying later attempts. No credentials are required to reach the network login interface; repeated guesses can compromise a local account and its authorized resources.

The record

CVE
CVE-2020-8827
Published
Apr 8, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-307, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 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

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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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-307Improper Restriction of Excessive Authentication Attempts
T1110Brute Force

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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