Skip to main content
cvebuzz

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

CVE detail

CVE-2025-21334

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

CVSS 7.8 · HighBuzz score 66.5KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 66.5

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 22.0 · diversity 19.5 · KEV 25.0 · OTX 0.0 · PoC 0.0
Mention score
22.0
8 evidence mentions in the snapshot
Diversity score
19.5
6 sources across 3 categories
KEV score
25.0
Known exploited vulnerability present
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
8 source links · newest first
  • DOGE’s cost-cutting database dives offer cybersecurity pros vital lessons in cloud securityCSO Online

    Cybersecurity has been politically agnostic until recently, but with the many rapid changes introduced by the Trump administration, it has become somewhat politicized and fraught with questions and self-examination. Claims on social media, rumors, and information disseminated by questionable sources are having a palpable impact on the security world, even at the highest of levels […]

    newswww.csoonline.comMar 20, 2025, 6:00 AM
  • February Patch Tuesday: CISOs should act now on two actively exploited Windows Server vulnerabilitiesCSO Online

    CISOs should make sure that two actively exploited vulnerabilities in Windows are addressed as part of their staff’s February Patch Tuesday efforts. They are: Of the pair, two experts say the WinSock hole is more serious. “With SYSTEM-level access, attackers could install programs, view, change, or delete data, or create new accounts with full user rights, […]

    newswww.csoonline.comFeb 12, 2025, 3:31 AM
  • Microsoft Patch Tuesday updates for January 2025 fixed three actively exploited flawsSecurity Affairs

    Microsoft Patch Tuesday security updates for January 2025 addressed 161 vulnerabilities, including three actively exploited issues. Microsoft Patch Tuesday security updates for January 2025 addressed 161 vulnerabilities in Windows and Windows Components, Office and Office Components, Hyper-V, SharePoint Server, .NET and Visual Studio, Azure, BitLocker, Remote Desktop Services, and Windows Virtual Trusted Platform Module. 11 […]

    newssecurityaffairs.comJan 15, 2025, 9:42 PM
  • U.S. CISA adds Fortinet FortiOS flaw to its Known Exploited Vulnerabilities catalogSecurity Affairs

    U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Fortinet FortiOS vulnerability to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Fortinet FortiOS authorization bypass vulnerability, tracked as CVE-2024-55591 (CVSS score: 9.6) to its Known Exploited Vulnerabilities (KEV) catalog. Remote attackers can exploit the vulnerability to bypass authentication and gain […]

    newssecurityaffairs.comJan 15, 2025, 2:58 PM
  • Microsoft fixes actively exploited Windows Hyper-V zero-day flawsHelp Net Security

    Microsoft has marked January 2025 Patch Tuesday with a hefty load of patches: 157 CVE-numbered security issues have been fixed in various products, three of which (in Hyper-V) are being actively exploited. The exploited Hyper-V vulnerabilities The exploited zero-days are CVE-2025-21333 (a buffer overflow bug), CVE-2025-21334 and CVE-2025-21335 (use after free flaws), and they all allow attackers to elevated their privilege to SYSTEM on compromised Windows and Windows Server machines. They affect a component of … More →

    newswww.helpnetsecurity.comJan 14, 2025, 8:57 PM
  • Microsoft Patches Trio of Exploited Windows Hyper-V Zero-DaysSecurityWeek

    Patch Tuesday: Microsoft’s January Patch Tuesday rollout includes fixes for 160 security defects, the largest number of CVEs addressed in any single month since at least 2017.

    newswww.securityweek.comJan 14, 2025, 7:26 PM
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21334www.cisa.gov

    No excerpt available.

    Mitigationwww.cisa.govJan 14, 2025, 6:15 PM
  • https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21334msrc.microsoft.com

    No excerpt available.

    Vendor Advisorymsrc.microsoft.comJan 14, 2025, 6:15 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