CVE-2021-27758

Account lockout via forged login request flooding

Published May 6, 2022 · Updated Sep 16, 2024

Cross-site request forgery in HCL BigFix Inventory 9.x and 10.x allows attackers to lock a user account through repeated login requests. The login form counts attacker-generated failed attempts against a supplied victim username, although HCL has not disclosed the exact origin-validation failure. With the default policy, more than 10 failed attempts within five minutes interrupt access to that account for five minutes.

CVSS severityUnavailable
Unscored
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in HCL BigFix Inventory 9.x and 10.x allows attackers to lock a user account through repeated login requests. The login form counts attacker-generated failed attempts against a supplied victim username, although HCL has not disclosed the exact origin-validation failure. With the default policy, more than 10 failed attempts within five minutes interrupt access to that account for five minutes.

The record

CVE
CVE-2021-27758
Published
May 6, 2022
Updated
Sep 16, 2024
Vendor
HCL Software
Product
HCL BigFix Inventory
Classifications
CWE-352, T1531
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.x
  2. Affected versionversion=9.x

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

HCL Software · HCL BigFix Inventoryversion=10.x; version=9.x

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1531Account Access Removal

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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