CVE-2024-38176Network attack vector

Unauthenticated privilege escalation via unrestricted login attempts

Published Jul 23, 2024 · Updated Feb 10, 2026

Improper restriction of authentication attempts in Microsoft GroupMe allows remote attackers to elevate privileges through repeated sign-in attempts. GroupMe's hosted authentication service does not adequately restrict excessive attempts, but Microsoft has not identified the affected endpoint or privilege transition. The attack is unauthenticated and requires high complexity; Microsoft has not specified which privileges or service capabilities become available.

CVSS severity8.1
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper restriction of authentication attempts in Microsoft GroupMe allows remote attackers to elevate privileges through repeated sign-in attempts. GroupMe's hosted authentication service does not adequately restrict excessive attempts, but Microsoft has not identified the affected endpoint or privilege transition. The attack is unauthenticated and requires high complexity; Microsoft has not specified which privileges or service capabilities become available.

The record

CVE
CVE-2024-38176
Published
Jul 23, 2024
Updated
Feb 10, 2026
Vendor
Microsoft
Product
GroupMe
Classifications
CWE-307, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 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.

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · GroupMeversion=-

Published CVSS scores

8.1Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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