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

CVE detail

CVE-2025-21418

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CVSS 7.8 · HighBuzz score 66.0KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 66.0

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 23.0 · diversity 18.0 · KEV 25.0 · OTX 0.0 · PoC 0.0
Mention score
23.0
9 evidence mentions in the snapshot
Diversity score
18.0
5 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
9 source links · newest first
  • Week in review: Microsoft fixes two actively exploited 0-days, PAN-OS auth bypass hole pluggedHelp Net Security

    Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Microsoft fixes two actively exploited zero-days (CVE-2025-21418, CVE-2025-21391) February 2025 Patch Tuesday is here, and Microsoft has delivered fixes for 56 vulnerabilities, including two zero-days – CVE-2025-21418 and CVE-2025-21391 – under active exploitation. PAN-OS authentication bypass hole plugged, PoC is public (CVE-2025-0108) Palo Alto Networks has fixed a high-severity authentication bypass vulnerability (CVE-2025-0108) in the management web interface of its … More →

    newswww.helpnetsecurity.comFeb 16, 2025, 9:00 AM
  • New Windows Zero-Day Exploited by Chinese APT: Security FirmSecurityWeek

    ClearSky Cyber Security says it has seen a new Windows zero-day being exploited by a Chinese APT named Mustang Panda.

    newswww.securityweek.comFeb 14, 2025, 11:40 AM
  • U.S. CISA adds Microsoft Windows, Zyxel device flaws to its Known Exploited Vulnerabilities catalogSecurity Affairs

    U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Windows, Zyxel device flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: The vulnerability CVE-2024-40891 is a command injection issue in Zyxel CPE Series devices that remains unpatched and has not yet […]

    newssecurityaffairs.comFeb 12, 2025, 8:01 AM
  • Microsoft Patch Tuesday security updates for February 2025 ficed 2 actively exploited bugsSecurity Affairs

    Microsoft Patch Tuesday security updates for February 2025 addressed four zero-day flaws, two of which are actively exploited in the wild. Microsoft Patch Tuesday security updates for February 2025 addressed 57 vulnerabilities in Windows and Windows Components, Office and Office Components, Azure, Visual Studio, and Remote Desktop Services. Two of these vulnerabilities are listed as […]

    newssecurityaffairs.comFeb 12, 2025, 7:27 AM
  • Microsoft fixes two actively exploited zero-days (CVE-2025-21418, CVE-2025-21391)Help Net Security

    February 2025 Patch Tuesday is here, and Microsoft has delivered fixes for 56 vulnerabilities, including two zero-days – CVE-2025-21418 and CVE-2025-21391 – under active exploitation. CVE-2025-21418 and CVE-2025-21391 CVE-2025-21418 is a vulnerability in the Windows Ancillary Function Driver (AFD.sys), which interfaces with the Windows Sockets API to enable Windows applications to connect to the internet. It can be exploited by attackers to elevate privileges on the target host. “An authenticated user would need to run … More →

    newswww.helpnetsecurity.comFeb 11, 2025, 8:15 PM
  • Microsoft Patches ‘Wormable’ Windows Flaw and File-Deleting Zero-DaySecurityWeek

    The Microsoft Patch Tuesday machine hummed loudly this month with urgent fixes for a pair of already-exploited Windows zero-days.

    newswww.securityweek.comFeb 11, 2025, 7:59 PM
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21418www.cisa.gov

    No excerpt available.

    Mitigationwww.cisa.govFeb 11, 2025, 6:15 PM
  • https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418msrc.microsoft.com

    No excerpt available.

    Vendor Advisorymsrc.microsoft.comFeb 11, 2025, 6:15 PM
  • February 2025 Patch Tuesday forecast: New directions for AI developmentHelp Net Security

    February 2025 Patch Tuesday is now live: Microsoft fixes two actively exploited zero-days (CVE-2025-21418, CVE-2025-21391) The new year has started with a whirlwind of activity, and one of the hottest topics in the news is the increasing emphasis on AI. DeepSeek ad Stargate DeepSeek took the world by storm as millions of copies were downloaded to personal devices, but soon security concerns arose as to how the chatbot used personal data. As research continues, many … More →

    newswww.helpnetsecurity.comFeb 10, 2025, 6:00 AM

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

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