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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2026-54998

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

CVSS 8.8 · HighBuzz score 21.9

Buzz score

Why this CVE is surfacing

Buzz score total 21.9

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 13.9 · diversity 8.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
8.0
3 sources across 1 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
3
within the 30d window
Peak daily
1
highest bucket

Evidence

Source links by recency

Newest mentions first
3 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
  • 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-2026-54998 Microsoft Exchange Online Elevation of Privilege VulnerabilityMicrosoft MSRC

    Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

    vendormsrc.microsoft.comJul 2, 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.

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