Common Weakness Enumeration

CWE-557

Grouping Prohibited

Concurrency Issues

Status: Draft

API response cwe.mitre.org

Weaknesses in this category are related to concurrent use of shared resources.

Grouping entries organize the catalogue and should not be used to map the root cause of a vulnerability.

Mapping guidance

This entry is a Grouping. Using groupings for mapping has been discouraged since 2019. They are informal organizational groupings of weaknesses that can help CWE users with data aggregation, navigation, and browsing. However, they are not weaknesses in themselves.

See member weaknesses of this category.

Relationships and members
Has Member: CWE-364 · View CWE-699
Has Member: CWE-366 · View CWE-699
Has Member: CWE-367 · View CWE-699
Has Member: CWE-368 · View CWE-699
Has Member: CWE-386 · View CWE-699
Has Member: CWE-421 · View CWE-699
Has Member: CWE-663 · View CWE-699
Has Member: CWE-820 · View CWE-699
Has Member: CWE-821 · View CWE-699
Has Member: CWE-1058 · View CWE-699
Has Member: CWE-1322 · View CWE-699
Content history
Submission: CWE Community · 2006-07-19 · CWE Draft 3

Submitted by members of the CWE community to extend early CWE versions

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Relationships

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Relationships

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Relationships

Modification: CWE Content Team · MITRE · 2022-04-28 · CWE 4.7

updated Relationships

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Mapping_Notes, Relationships

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Mapping_Notes, Type

3 vulnerabilities reference this CWE, most recent first.

CVE-2026-21806 (GCVE-0-2026-21806)

Vulnerability from cvelistv5 – Published: 2026-09-18 11:12 – Updated: 2026-09-18 19:07
VLAI
Title
HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)
Summary
HCL BigFix Service Management is affected by an Administrative Session Concurrency vulnerability. The application allows multiple simultaneous authenticated sessions for the same administrative account, which could enable an unauthorized attacker to predict or hijack valid session identifiers. Successful exploitation allows an attacker to compromise affected administrative sessions and execute actions with full privileged user permissions.
Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 19:07 UTC
CWE
Assigner
HCL CNA under the mitre root
CNA scorecard C 64/100 over 174 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2025-62343 (GCVE-0-2025-62343)

Vulnerability from cvelistv5 – Published: 2026-08-27 13:11 – Updated: 2026-08-27 19:43
VLAI
Title
HCL IntelliOps Event Management is affected by multiple security vulnerabilities.
Summary
HCL IntelliOps Event Management (IEM) is affected by an Admin Session Concurrency Vulnerability. it may allows user sessions to remain active after logout or session deletion.
Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:43 UTC
CWE
Assigner
HCL CNA under the mitre root
CNA scorecard C 64/100 over 174 records in the last 180 days details
References
Impacted products
Vendor Product Version
HCL Software HCL IEM Affected: v1.3 and v1.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-55275 (GCVE-0-2025-55275)

Vulnerability from cvelistv5 – Published: 2026-03-26 12:47 – Updated: 2026-03-26 13:21
VLAI
Title
HCL Aftermarket DPC is affected by Admin Session Concurrency vulnerability
Summary
HCL Aftermarket DPC is affected by Admin Session Concurrency vulnerability using which an attacker can exploit concurrent sessions to hijack or impersonate an admin user.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 13:21 UTC
CWE
  • CWE-557 - Concurrency Issues is a Category
Assigner
HCL CNA under the mitre root
CNA scorecard C 64/100 over 174 records in the last 180 days details
References
Impacted products
Vendor Product Version
HCL Aftermarket DPC Affected: version 1.0.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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