Unauthorized account access via unrestricted login attempts
Published Aug 24, 2026 · Updated Aug 24, 2026
Missing authentication rate limiting in HCL Hive 1.0 allows remote attackers to gain unauthorized account access through repeated login requests. HCL has not identified the affected authentication endpoint or published its request-handling logic; the disclosed defect is failure to restrict excessive authentication attempts. No privileges or user interaction are required, and successful password guessing or credential reuse grants unauthorized account access.
Summary
What happened
Missing authentication rate limiting in HCL Hive 1.0 allows remote attackers to gain unauthorized account access through repeated login requests. HCL has not identified the affected authentication endpoint or published its request-handling logic; the disclosed defect is failure to restrict excessive authentication attempts. No privileges or user interaction are required, and successful password guessing or credential reuse grants unauthorized account access.
The record
- CVE
- CVE-2026-21755
- Published
- Aug 24, 2026
- Updated
- Aug 24, 2026
- Vendor
- HCLSoftware
- Product
- HCL Hive
- Classifications
- CWE-307, T1110.004, T1110.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 24, 2026CVE publishedPublication date reported by the CVE source.
- Aug 24, 2026Record 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.
- Affected versionversion=1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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