Security readout for executives and security teams
Plain-English summary
A flaw in the Windows kernel lets an attacker who already has a foothold on a Windows PC or server escalate to full system control. They cannot use it to break in from outside, but once inside through phishing, stolen credentials, or another bug, they can take over the machine. Microsoft has issued a fix.
Executive priority
Patch on the next standard Windows maintenance cycle, accelerated for shared systems and privileged workstations. Real-world risk depends on an attacker already being inside, so this should ride alongside identity, phishing, and initial-access controls rather than triggering an emergency change.
Technical view
Race condition in the Windows Kernel (CWE-362) leading to a double-free condition (CWE-415) that an authorized local user can exploit to elevate privileges. CVSS 3.1 base 7.0 (AV:L/AC:H/PR:L/UI:N/C:H/I:H/A:H). Threat metrics indicate functional exploit code exists (E:F) with confirmed reports (RC:C) and an official remediation available (RL:O).
Likely exposure
Broad. Microsoft lists Windows 10 (1809, 21H2, 22H2), Windows 11 (22H3, 23H2, 24H2, 25H2), and Windows Server 2019, 2022, 2022 23H2, and 2025 — including Server Core installations — as affected. Most enterprise Windows estates have at least one in-scope build.
Exploitation context
Not listed on CISA KEV at the time of this analysis. The CVSS temporal metrics (E:F/RC:C) indicate functional, confirmed exploit code is reported, but no public source in this bundle confirms in-the-wild abuse. Attack is local and high complexity, requiring an existing low-privilege foothold to win the race.
Researcher notes
Dual CWE mapping (race condition leading to double-free) suggests a TOCTOU-style window in a kernel object lifecycle. AC:H reflects timing sensitivity in winning the race. Hunt for repeated process crashes, kernel pool corruption events, and unusual token manipulation from non-admin contexts. Treat any local-privilege-escalation primitive as a likely pairing with phishing-delivered loaders.
Mitigation direction
- Apply Microsoft's November 2025 security update for CVE-2025-62215 across all affected Windows client and server builds.
- Prioritize patching multi-user systems, jump hosts, RDS/Citrix servers, and developer workstations where local code execution is common.
- Restrict local user rights and enforce application allow-listing to limit who can stage a local exploit.
- Monitor endpoint telemetry for unexpected kernel crashes, suspicious child processes of low-privileged users, and new SYSTEM-context activity.
- If patching must be deferred, consult Microsoft's MSRC advisory for any vendor-published workarounds before relying on compensating controls.
Validation and detection
- Inventory Windows builds against the affected list and confirm patch level via WSUS, Intune, SCCM, or PowerShell Get-HotFix queries.
- Validate that the November 2025 cumulative update referenced in MSRC is installed on every in-scope host.
- Run authenticated vulnerability scans (e.g., Tenable, Qualys, Defender Vulnerability Management) keyed to CVE-2025-62215 to catch missed systems.
- Review EDR detections for kernel-mode privilege escalation and double-free indicators on hosts pending reboot.
- Confirm Server Core and gold-image builds are remediated, not just interactive workstations.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-362: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-415: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-62215 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Kernel Elevation of Privilege VulnerabilityCVE reference · vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-62215CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Double Free
Double Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.