Security readout for executives and security teams
Plain-English summary
This is a Windows local privilege escalation in the Common Log File System driver. An attacker who already has authorized local access could gain higher privileges, increasing impact after malware, phishing, or stolen low-privilege access. Microsoft has published a patch, and CISA KEV indicates known exploitation.
Executive priority
Treat this as urgent patching work, not routine hygiene. The vulnerability is local, but KEV status means attackers have used it in the real world, and successful exploitation can turn limited access into full system compromise.
Technical view
CVE-2025-29824 is a CWE-416 use-after-free in the Windows Common Log File System Driver. CVSS 3.1 is 7.8 with local attack vector, low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely on unpatched affected Windows 10, Windows 11, and Windows Server systems listed by Microsoft, including Server Core variants. This is not described as remotely exploitable by itself; it requires local authorized access.
Exploitation context
Active exploitation is supported by the CISA Known Exploited Vulnerabilities listing. The source bundle does not include exploit mechanics, indicators of compromise, targeted sectors, or campaign attribution, so those details should not be assumed.
Researcher notes
Focus validation on patch state and affected OS versions. The bundle supports local EoP, CWE-416, and KEV exploitation, but does not provide reliable exploit primitives, telemetry, or indicators. Avoid assuming remote reachability or specific attacker tooling.
Mitigation direction
- Apply Microsoft security updates from the MSRC advisory.
- Prioritize patching internet-facing, shared, and high-value Windows systems.
- Check CISA KEV requirements for organizational remediation deadlines.
- Review Microsoft guidance before relying on compensating controls.
- Validate any third-party mitigation script before enterprise use.
Validation and detection
- Inventory Windows builds against the affected product list.
- Confirm installed updates using Microsoft patch guidance.
- Identify systems still running affected baseline versions.
- Review CISA KEV status for exploitation context.
- Assess Vicarius detection guidance before operational use.
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-2025-29824 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
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/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:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/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 Common Log File System Driver Elevation of Privilege VulnerabilityCVE reference · vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-29824CVE reference · government-resource
- https://www.vicarius.io/vsociety/posts/cve-2025-29824-windows-common-log-file-system-driver-elevation-of-privilege-vulnerability-mitigation-scriptCVE reference
- https://www.vicarius.io/vsociety/posts/cve-2025-29824-windows-common-log-file-system-driver-elevation-of-privilege-vulnerability-detection-scriptCVE reference
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.