CVE-2024-38164
Published: 23 July 2024
Summary
CVE-2024-38164 is a critical-severity Improper Access Control (CWE-284) vulnerability in Microsoft Groupme. Its CVSS base score is 9.6 (Critical).
Operationally, ranked in the top 11.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
An improper access control vulnerability, tracked as CVE-2024-38164 and assigned CWE-284, affects the GroupMe application. The flaw carries a CVSS 3.1 score of 9.6 and permits unauthorized elevation of privileges when an unauthenticated attacker interacts with the service over a network.
An unauthenticated remote attacker can exploit the issue by convincing a target user to click a malicious link, resulting in privilege escalation with high impact to confidentiality, integrity, and availability under changed scope conditions.
Microsoft’s Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38164 supplies official guidance and any available patches or workarounds for affected GroupMe deployments.
EPSS for the CVE rose from lower values to a recorded peak of 0.0538 on 2025-12-18 before receding to the current 0.0392, indicating a measurable increase in exploitation interest after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-37797
Vulnerability details
An improper access control vulnerability in GroupMe allows an a unauthenticated attacker to elevate privileges over a network by convincing a user to click on a malicious link.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Requiring prior authorization for each remote access type prevents improper access control over remote connections.
Requiring authorization of wireless access before allowing connections enforces proper access control for this access method.