Security readout for executives and security teams
Plain-English summary
HCL BigFix Mobile / Modern Client Management 2.0.x has insufficient protection against repeated password guessing for Admin and Config UI accounts. An attacker with required access could try many invalid passwords without the expected lockout, risking limited disclosure or unauthorized changes.
Executive priority
Prioritize within normal vulnerability management, faster if the admin UI is reachable outside a tightly controlled admin network. The issue is not listed as known exploited in the provided sources.
Technical view
The CVE maps to CWE-307: improper restriction of excessive authentication attempts. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N, indicating network reachability, low attack complexity, required low privileges, and limited confidentiality and integrity impact.
Likely exposure
Exposure is most likely in organizations running HCL BigFix Mobile 2.0.x where the Admin or Config UI is reachable from broader internal networks or remote access paths.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Treat this as a credential-protection weakness that becomes more urgent when administrative interfaces are widely reachable.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and HCL advisory reference. Do not assume affected versions beyond BigFix Mobile 2.0.x or claim exploit availability without additional sourced evidence.
Mitigation direction
- Review HCL advisory KB0102477 for official remediation guidance.
- Apply any vendor-provided update or configuration change for affected 2.0.x deployments.
- Restrict Admin and Config UI access to trusted administrative networks.
- Use strong, unique administrative passwords and MFA where supported.
- Monitor repeated failed login attempts against BigFix Mobile interfaces.
Validation and detection
- Inventory HCL BigFix Mobile / Modern Client Management deployments and versions.
- Confirm whether any 2.0.x systems expose Admin or Config UI.
- Check whether lockout or rate limiting occurs after repeated invalid logins.
- Review authentication logs for repeated failures or password-spraying patterns.
- Verify remediation status against HCL KB0102477.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-307: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-27782 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0102477CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Excessive Authentication Attempts
Improper Restriction of Excessive Authentication Attempts represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.