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

CVE detail

CVE-2026-21530

Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.

CVSS 6.7 · MediumBuzz score 17.5

Buzz score

Why this CVE is surfacing

Buzz score total 17.5

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 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
6.5
2 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
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • CVE-2026-21530 Windows Rich Text Edit Elevation of Privilege VulnerabilityMicrosoft MSRC

    Added Office softwares to the Security Updates table. Customers that are running supported versions of Office are encouraged to update to the indicated versions to be protected from this vulnerability.

    vendormsrc.microsoft.comJun 9, 2026, 2:00 PM
  • The May 2026 Security Update ReviewZero Day Initiative

    take a closer look at some of the more interesting updates for this month, starting with a nasty-looking bug in DNS: - CVE-2026-41096 - Windows DNS Client Remote Code Execution Vulnerability This patch fixes a heap-based buffer overflow in the DNS Client triggered by a malicious DNS response. No authentication or user interaction needed, and since the

    vendorwww.thezdi.comMay 12, 2026, 6:38 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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