CVE-2025-21418
Microsoft Windows Ancillary Function Driver for Wi - [Actively Exploited]
Description
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
INFO
Published Date :
Feb. 11, 2025, 6:15 p.m.
Last Modified :
Feb. 12, 2025, 2 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21418
Affected Products
The following products are affected by CVE-2025-21418
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-21418.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-21418 vulnerability anywhere in the article.
-
CrowdStrike.com
February 2025 Patch Tuesday: Four Zero-Days and Three Critical Vulnerabilities Among 67 CVEs
Microsoft has released security updates for 67 vulnerabilities in its February 2025 Patch Tuesday rollout. Among these are three Critical vulnerabilities and four zero-days affecting the Windows NTLMv ... Read more
-
The Hacker News
Microsoft’s Patch Tuesday Fixes 63 Flaws, Including Two Under Active Exploitation
Patch Tuesday / Vulnerability Microsoft on Tuesday released fixes for 63 security flaws impacting its software products, including two vulnerabilities that it said has come under active exploitation i ... Read more
-
CrowdStrike.com
February 2025 Patch Tuesday: Four Zero-Days and Three Critical Vulnerabilities Among 67 CVEs
Microsoft has released security updates for 67 vulnerabilities in its February 2025 Patch Tuesday rollout. Among these are three Critical vulnerabilities and four zero-days affecting the Windows NTLMv ... Read more
-
security.nl
Microsoft dicht misbruikte Windows-lekken en 'wormable' LDAP-kwetsbaarheid
Tijdens de patchdinsdag van februari heeft Microsoft twee actief misbruikte kwetsbaarheden in Windows verholpen, alsmede een beveiligingslek dat vooralsnog niet is misbruikt, maar wat een computerworm ... Read more
-
krebsonsecurity.com
Microsoft Patch Tuesday, February 2025 Edition
Microsoft today issued security updates to fix at least 56 vulnerabilities in its Windows operating systems and supported software, including two zero-day flaws that are being actively exploited. All ... Read more
-
The Register
February's Patch Tuesday sees Microsoft offer just 63 fixes
Patch Tuesday Microsoft’s February patch collection is mercifully smaller than January’s mega-dump. But don't get too relaxed – some deserve close attention, and other vendors have stepped in with ple ... Read more
-
TheCyberThrone
CISA Adds Microsoft and Zyxel Vulnerabilities to KEV Catalog
On February 11, 2025, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added four vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog. These vulnerabilities, associate ... Read more
-
Dark Reading
Microsoft's February Patch a Lighter Lift Than January's
Source: Somphop Krittayaworagul via ShutterstockMicrosoft's February security update contains substantially fewer vulnerabilities for admins to address compared to a month ago, but there's still plent ... Read more
-
tripwire.com
VERT Threat Alert: February 2025 Patch Tuesday Analysis
Today’s VERT Alert addresses Microsoft’s February 2025 Security Updates. VERT is actively working on coverage for these vulnerabilities and expects to ship ASPL-1143 as soon as coverage is completed.I ... Read more
-
Help Net Security
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. CVE-2025-21418 a ... Read more
-
BleepingComputer
Microsoft February 2025 Patch Tuesday fixes 4 zero-days, 55 flaws
Today is Microsoft's February 2025 Patch Tuesday, which includes security updates for 55 flaws, including four zero-day vulnerabilities, with two actively exploited in attacks. This Patch Tuesday also ... Read more
The following table lists the changes that have been made to the
CVE-2025-21418 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Feb. 12, 2025
Action Type Old Value New Value Added Date Added 2025-02-11 Added Due Date 2025-03-04 Added Required Action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Added Vulnerability Name Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability -
New CVE Received by [email protected]
Feb. 11, 2025
Action Type Old Value New Value Added Description Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-122 Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21418 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-21418
weaknesses.