CVE-2025-21335
Microsoft Windows Hyper-V NT Kernel Integration VS - [Actively Exploited]
Description
Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability
INFO
Published Date :
Jan. 14, 2025, 6:15 p.m.
Last Modified :
Jan. 15, 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 Hyper-V NT Kernel Integration VSP contains a use-after-free vulnerability that allows 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/en-US/vulnerability/CVE-2025-21335 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21335
Affected Products
The following products are affected by CVE-2025-21335
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-2025-21335.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21335 |
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-2025-21335 vulnerability anywhere in the article.
-
CrowdStrike.com
January 2025 Patch Tuesday: 10 Critical Vulnerabilities and Eight Zero-Days Among 159 CVEs
Microsoft has released security updates for 159 vulnerabilities in its January 2025 Patch Tuesday rollout. Among these are 10 Critical vulnerabilities and eight zero-days affecting the Windows Hyper-V ... Read more
-
Help Net Security
Rsync vulnerabilities allow remote code execution on servers, patch quickly!
Six vulnerabilities have been fixed in the newest versions of Rsync (v3.4.0), two of which could be exploited by a malicious client to achieve arbitrary code execution on a machine with a running Rsyn ... Read more
-
CrowdStrike.com
January 2025 Patch Tuesday: 10 Critical Vulnerabilities and Eight Zero-Days Among 159 CVEs
Microsoft has released security updates for 159 vulnerabilities in its January 2025 Patch Tuesday rollout. Among these are 10 Critical vulnerabilities and eight zero-days affecting the Windows Hyper-V ... Read more
-
security.nl
Kwetsbaarheden Windows Hyper-V NT Kernel Integration VSP actief misbruikt
Drie kwetsbaarheden in Windows Hyper-V NT Kernel Integration VSP zijn actief misbruikt bij aanvallen, zo laat Microsoft weten, dat tevens beveiligingsupdates heeft uitgebracht om de problemen te verhe ... Read more
-
CrowdStrike.com
January 2025 Patch Tuesday: 10 Critical Vulnerabilities and Eight Zero-Days Among 159 CVEs
Microsoft has released security updates for 159 vulnerabilities in its January 2025 Patch Tuesday rollout. Among these are 10 Critical vulnerabilities and eight zero-days affecting the Windows Hyper-V ... Read more
-
The Hacker News
3 Actively Exploited Zero-Day Flaws Patched in Microsoft's Latest Security Update
Microsoft kicked off 2025 with a new set of patches for a total of 161 security vulnerabilities across its software portfolio, including three zero-days that have been actively exploited in attacks. O ... Read more
-
Cybersecurity News
Microsoft’s January 2025 Patch Tuesday Fixes 159 Vulnerabilities, Including 10 Critical and 8 Zero-Days
Microsoft delivers its first Patch Tuesday of 2025 with a robust security update addressing a wide range of vulnerabilities. With 159 issues patched, including 10 critical and 149 important ones, this ... Read more
-
TheCyberThrone
Microsoft Patch Tuesday- January 2025
Microsoft released the January 2025 Patch Tuesday updates on January 14, 2025, focusing on addressing critical security vulnerabilities across various Microsoft products. This update cycle includes se ... Read more
-
The Register
Microsoft fixes under-attack privilege-escalation holes in Hyper-V
Patch Tuesday The first Patch Tuesday of 2025 has seen Microsoft address three under-attack privilege-escalation flaws in its Hyper-V hypervisor, plus plenty more problems that deserve your attention. ... Read more
-
Dark Reading
Microsoft Rings in 2025 With Record Security Update
Source: Elena11 via ShutterstockMicrosoft's January update contains patches for a record 159 vulnerabilities, including eight zero-day bugs, three of which attackers are already actively exploiting.Th ... Read more
-
krebsonsecurity.com
Microsoft: Happy 2025. Here’s 161 Security Updates
Microsoft today unleashed updates to plug a whopping 161 security vulnerabilities in Windows and related software, including three “zero-day” weaknesses that are already under active attack. Redmond’s ... Read more
-
The Cyber Express
Microsoft January 2025 Patch Tuesday: 8 Zero-Days, 3 Actively Exploited
Microsoft’s Patch Tuesday update for January 2025 patches 159 vulnerabilities, including eight zero-days, three of which are being actively exploited. The Microsoft January 2025 Patch Tuesday release ... Read more
-
tripwire.com
VERT Threat Alert: January 2025 Patch Tuesday Analysis
Today’s VERT Alert addresses Microsoft’s January 2025 Security Updates. VERT is actively working on coverage for these vulnerabilities and expects to ship ASPL-1139 as soon as coverage is completed.In ... Read more
-
Help Net Security
Microsoft fixes actively exploited Windows Hyper-V zero-day flaws
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 explo ... Read more
-
BleepingComputer
Microsoft January 2025 Patch Tuesday fixes 8 zero-days, 159 flaws
Today is Microsoft's January 2025 Patch Tuesday, which includes security updates for 159 flaws, including eight zero-day vulnerabilities, with three actively exploited in attacks.This Patch Tuesday al ... Read more
The following table lists the changes that have been made to the
CVE-2025-21335 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
Jan. 15, 2025
Action Type Old Value New Value Added Date Added 2025-01-14 Added Due Date 2025-02-04 Added Required Action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Added Vulnerability Name Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability -
New CVE Received by [email protected]
Jan. 14, 2025
Action Type Old Value New Value Added Description Windows Hyper-V NT Kernel Integration VSP 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-416 Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21335
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21335 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-2025-21335
weaknesses.