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CVE detail

CVE-2026-56178

Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

CVSS 5.5 · MediumBuzz score 29.1

Buzz score

Why this CVE is surfacing

Buzz score total 29.1

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 16.1 · diversity 13.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
16.1
4 evidence mentions in the snapshot
Diversity score
13.0
4 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
4
within the 30d window
Peak daily
4
highest bucket

Evidence

Source links by recency

Newest mentions first
4 source links · newest first
  • Patch Tuesday - July 2026Rapid7

    ation of remediations as a trailing indicator. SharePoint: critical auth bypass by Rapid7 Today sees the publication of CVE-2026-55040 , a critical authentication bypass in Microsoft SharePoint. Discovered by Rapid7 Senior Principal Security Researcher Stephen Fewer , and published today in coordination with Microsoft, this vulnerability is the first i

    vendorwww.rapid7.comJul 14, 2026, 10:00 PM
  • Microsoft July 2026 Patch Tuesday fixes massive 570 flaws, 3 zero-daysBleepingComputer

    ile no official fix is available. The two actively exploited zero-days addressed during this month's Patch Tuesday are: CVE-2026-56155 - Active Directory Federation Services Elevation of Privilege Vulnerability Microsoft has patched an actively exploited vulnerability in Active Directory Federation Services that grants administrative privileges. "Insuf

    newswww.bleepingcomputer.comJul 14, 2026, 6:01 PM
  • The July 2026 Security Update ReviewZero Day Initiative

    oser look at some of the more interesting updates for this month, starting with the bugs being exploited in the wild. - CVE-2026-56155 - Active Directory Federation Services Elevation of Privilege Vulnerability This is one of several AD FS being patched this month, but it’s the only one being actively exploited. It stems from insufficient access-contro

    vendorwww.thezdi.comJul 14, 2026, 5:56 PM
  • CVE-2026-56178 Microsoft Defender for Endpoint for Mac Elevation of Privilege VulnerabilityMicrosoft MSRC

    Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

    vendormsrc.microsoft.comJul 14, 2026, 2:00 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-50658

    Time-of-check time-of-use (toctou) race condition in Microsoft Defender allows an authorized attacker to elevate privileges locally.

    CVSS 7.0 · High
    4 mentions
  • CVE-2026-45647

    Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

    CVSS 5.5 · Medium
    3 mentions
  • CVE-2025-59497

    Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Linux allows an authorized attacker to deny service locally.

    CVSS 7.0 · High
  • CVE-2026-59676

    A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in seunshare of selinux policycoreutils allows a user calling seunshare that is running in the unconfined SELinux…

    CVSS 5.8 · Medium
    2 mentions
  • CVE-2026-65598

    n8n before 1.123.64, 2.29.8, and 2.30.1 contains a TOCTOU race condition in the Git node's clone operation that allows authenticated users to bypass path restrictions by swapping…

    CVSS 8.9 · High
    2 mentions
  • CVE-2026-16082

    A vulnerability was identified in Sipeed PicoClaw up to 0.2.9. The impacted element is the function ExecTool.executeRun of the file pkg/agent/pipeline_execute.go. The manipulation…

    CVSS 1.9 · Low
    6 mentions