CVE detail
CVE-2026-55012
Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.
Buzz score
Why this CVE is surfacing
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 22.0 · diversity 19.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 8
- within the 30d window
- Peak daily
- 7
- highest bucket
Evidence
Source links by recency
8 source links · newest first
- July 2026 Patch Tuesday: Microsoft Patches 622 Vulnerabilities Including Two Exploited Zero-DaysCrowdStrike
t families affected by July 2026 Patch Tuesday Exploited Zero-Day Vulnerability in Active Directory Federation Services CVE-2026-56155 is an Important elevation of privilege vulnerability affecting Active Directory Federation Services (AD FS) and has a CVSS score of 7.8 . An insufficient granularity of access control flaw (CWE-1220) allows a low-privil
vendorwww.crowdstrike.comJul 17, 2026, 8:00 PM 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 PMurity updates" and continuous patching. High-Priority Vulnerabilities The immediate threats in this month's release are CVE-2026-56155 (CVSS: 7.2), an elevation of privilege (EoP) vulnerability in Microsoft Active Directory Federation Services that attackers can exploit to gain system level privileges; and CVE-2026-56164 (CVSS: 5.3), another EoP flaw,
newswww.darkreading.comJul 14, 2026, 9:50 PMication denial-of-service, and arbitrary code execution. Zero-day Vulnerabilities Patched in July Patch Tuesday Edition CVE-2026-56155: Active Directory Federation Services Elevation of Privilege Vulnerability Insufficient granularity of access control in Active Directory Federation Services (AD FS) could allow an authenticated attacker to elevate priv
vendorblog.qualys.comJul 14, 2026, 9:23 PMed as "critical." Microsoft notes that two of the vulnerabilities disclosed this month have been exploited in the wild. CVE-2026-56155 is an important-severity elevation of privilege vulnerability in Active Directory Federation Services (AD FS) caused by insufficient granularity of access control. An authorized attacker could use it to elevate privileg
vendorblog.talosintelligence.comJul 14, 2026, 8:27 PMile 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 Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.
vendormsrc.microsoft.comJul 14, 2026, 2:00 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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