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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged local access
  2. Delivery
    Invoke Remote Access Connection Manager API
  3. Exploit
    Trigger use of uninitialized/freed resource
  4. Execution
    Corrupt service memory state
  5. Persist
    Execute code as SYSTEM
  6. Impact
    Full local privilege escalation

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires the attacker to already have local, interactive or programmatic access to the target Windows host as an authenticated low-privileged user (PR:L, AV:L) - there is no remote or network-triggerable path. Exploitation hinges on reaching the vulnerable code in the Remote Access Connection Manager (RasMan) service, which is present and running by default across supported Windows client and server editions, so no special non-default configuration is needed beyond the RasMan service being active. No user interaction by a separate victim is required (UI:N). The primary limiting factor is the prerequisite of prior code execution/logon on the machine, which confines this to post-compromise privilege escalation rather than initial access.

Impact

This is a genuine but second-tier priority: a local elevation-of-privilege flaw in the Windows Remote Access Connection Manager (RasMan) service. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, 7.8 HIGH) is internally consistent with the description - local vector, low complexity, and an already-authenticated low-privileged attacker gaining full CIA impact (SYSTEM-level EOP). It is NOT a remote or unauthenticated issue, so it is not a perimeter-breach vulnerability; it is a post-compromise privilege-escalation primitive. The EPSS score of 2.20% (82nd percentile) is notably elevated for a local-only bug and above the typical Patch-Tuesday EOP baseline, suggesting the scoring model sees meaningful exploitation potential - consistent with RasMan/EOP bugs being historically favored in exploit chains - but it still falls far short of imminent-exploitation territory. There is no CISA KEV listing and no public POC identified at time of analysis, so exploitation is at most anticipated, not observed. One data conflict worth flagging: the description states 'use of uninitialized resource' (behaviorally CWE-908) while the assigned CWE is CWE-416 (use-after-free) and the 'Use After Free' tag echoes that - verify the precise root cause with Microsoft, though it does not change the priority. Bottom line: a real, patch-on-cycle EOP rather than a drop-everything emergency, because it requires prior local code execution.

Exploit ScenarioDerived

An attacker who already has a foothold on a Windows host as a standard (low-privileged) user - for example via phishing-delivered malware or a compromised service account - invokes the Remote Access Connection Manager in a way that triggers use of an uninitialized/freed resource. By controlling the contents of that memory, they corrupt kernel or service state to execute code in the SYSTEM context, completing local privilege escalation. No public exploit code has been identified at time of analysis, and the attack requires local access and low-complexity interaction with RasMan.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 2.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 30, 2026

Local privilege escalation in Windows Remote Access Connection Manager (RasMan) permits an authenticated low-privileged attacker to execute code with SYSTEM privileges via a use-after-free (CWE-416) or uninitialized resource memory corruption condition. The flaw affects a broad range of Windows client and server versions, including Windows 10, Windows 11, and multiple Windows Server editions, though no public exploit code or active exploitation has been identified at time of analysis (EPSS 2.2%, 82nd percentile). Exploitation requires the attacker to already have local interactive or programmatic access and does not require user interaction.

RemediationAI

Microsoft has released a security update to address CVE-2025-62472; apply the latest cumulative updates for your Windows version as detailed in the MSRC advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62472). Because this is a local privilege escalation requiring prior access, prioritize patching on systems where untrusted users have interactive logon or can execute low-privileged code. If patching is not immediately possible, consider disabling the Remote Access Connection Manager (RasMan) service on systems that do not require VPN or dial-up functionality-but this will break those features and may affect other dependent services. Alternatively, enforce strict privilege management and application control (e.g., WDAC, AppLocker) to limit an attacker's ability to run exploit code; however, these are compensating controls and do not eliminate the flaw. No exact fix version is provided in the available data, so refer to the vendor advisory for the specific patch applicable to your OS build.

Affects your stack

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Technical ContextAI · show details

The Windows Remote Access Connection Manager (RasMan) is a built-in service that manages VPN, dial-up, and other remote access connections, running with SYSTEM privileges. The vulnerability is rooted in memory corruption-specifically CWE-416 (use-after-free) as tagged, though the description also references use of an uninitialized resource-within the service's handling of connection-related data. An authenticated local user can trigger the flaw by interacting with the vulnerable component, leading to arbitrary code execution in the context of the SYSTEM account. The affected CPEs span Windows 10 1607, 1809, 21H2, and 22H2; Windows 11 23H2, 24H2, and 25H2; and Windows Server 2008 SP2 x64, with tags indicating additional Windows Server versions 2012 through 2025 are impacted. The attack vector is strictly local (AV:L) and requires low privileges (PR:L) but no user interaction (UI:N).

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Severity by source

Vendor (microsoft) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.8 HIGH

Local authenticated low-privileged user (AV:L/PR:L) reliably triggers the RasMan flaw (AC:L) with no interaction, yielding SYSTEM-level EOP with full CIA impact in the same component scope.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Use of uninitialized resource in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

Executive ViewAI

Why It Matters

A high-severity privilege-escalation flaw in the Windows Remote Access Connection Manager (RasMan), a service present on the majority of Windows 10, Windows 11, and Windows Server systems across the estate, would allow an attacker who already holds a foothold on a machine to elevate to full SYSTEM control. Because no vendor patch is currently available and the component cannot simply be removed where VPN or remote access functionality is in use, leadership should treat this as an elevated-risk item requiring interim controls rather than routine patch-cycle handling. The primary exposure is to endpoints and servers where an initial compromise could be converted into full administrative control, increasing the blast radius of any phishing, malware, or insider incident.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: remove or restrict local interactive and programmatic logon rights for non-administrative users; enforce application allowlisting (WDAC/AppLocker) to prevent untrusted code execution; disable or set the Remote Access Connection Manager service to manual on hosts that do not require VPN/remote access; restrict local administrator group membership and limit credential caching; enable EDR alerting for RasMan process tampering, handle-based memory abuse, and unexpected SYSTEM-level token elevation.

Threat Intelligence Overview

EPSS Score
2.2%
Top 18% exploitable
Prevalence
Ubiquitous
RasMan is a core service shipped in all supported Windows client and server editions
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 2.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
Medium

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
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