Security readout for executives and security teams
Plain-English summary
This is a Windows local privilege escalation flaw in the Win32 Kernel Subsystem. An attacker who already has authorized local access could exploit a use-after-free bug to gain higher privileges. CISA lists it as known exploited, so exposed legacy Windows systems should be treated as urgent.
Executive priority
High priority. This is not a remote entry bug, but CISA KEV status means attackers are using it. It can turn a limited foothold into full system compromise on affected Windows hosts, especially legacy servers that may be harder to patch.
Technical view
CVE-2025-24983 is CWE-416 use-after-free in the Windows Win32 Kernel Subsystem. The CVSS 3.1 score is 7.0 with local attack vector, high complexity, low privileges required, no user interaction, and high impact to confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to the Microsoft Windows versions listed in the source bundle: Windows 10 1507/1607 and Windows Server 2008 SP2, 2008 R2 SP1, 2012, 2012 R2, and 2016, including listed Server Core installations.
Exploitation context
Active exploitation is supported by CISA KEV inclusion. The provided sources do not describe exploit volume, attacker groups, indicators, or exact exploitation method. Because this is local privilege escalation, it is most relevant after an attacker gains a user account or local foothold.
Researcher notes
Do not assume broad Windows exposure beyond the listed affected products. The bundle confirms a local, high-complexity use-after-free with low privileges required and official remediation available through Microsoft. Exploit details and indicators are not included in the provided sources.
Mitigation direction
- Apply Microsoft security updates referenced by the MSRC advisory.
- Prioritize remediation for internet-exposed management hosts and high-value servers running affected versions.
- Confirm legacy Windows systems can receive applicable Microsoft updates or compensating vendor guidance.
- Limit local interactive access and unnecessary low-privilege accounts on affected systems.
- Monitor CISA KEV and MSRC for updated remediation guidance.
Validation and detection
- Inventory endpoints and servers for the affected Windows versions listed in the bundle.
- Verify installed updates against the MSRC CVE-2025-24983 advisory.
- Check whether any affected systems remain unpatched after KEV-driven remediation deadlines.
- Review endpoint telemetry for suspicious privilege escalation activity; no indicators are provided here.
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-416: 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-2025-24983 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 Win32 Kernel Subsystem Elevation of Privilege VulnerabilityCVE reference · vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24983CVE 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.