Security readout for executives and security teams
Plain-English summary
A user who already has local, low-privileged access to an affected Windows computer could exploit a Storage Spaces Controller flaw to gain higher privileges. Successful exploitation could enable broad control over the system, including access to sensitive information, unauthorized changes, and service disruption.
Executive priority
Treat this as a high-priority patching issue, especially on servers and systems exposed to multiple users. It is not presented as an unauthenticated remote compromise or confirmed active exploitation, but it could turn an initial foothold into full system control.
Technical view
CVE-2026-35415 is a local elevation-of-privilege vulnerability caused by integer overflow or wraparound (CWE-190) in Windows Storage Spaces Controller. It has CVSS 3.1 score 7.8: local access, low complexity, low privileges, and no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure includes the listed Windows 10, Windows 11, and Windows Server releases, including several Server Core installations. An attacker must already have authorized local access, so compromised user accounts, malware footholds, shared systems, and multi-user servers present the clearest risk.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not identified as being in CISA KEV. No public exploit evidence is provided. The low-complexity, low-privilege, no-interaction rating nevertheless makes it relevant for post-compromise privilege escalation.
Researcher notes
The weakness is classified as CWE-190, but the bundle provides no vulnerable code path, proof of concept, attack artifact, or detection signature. Researchers should rely on Microsoft’s advisory for affected-release and update details. Duplicate capitalization entries for Windows 11 23H2 appear in the supplied affected list.
Mitigation direction
- Apply the applicable Microsoft security update for each affected Windows release.
- Prioritize shared servers, administrator workstations, and systems where untrusted users can obtain local access.
- Restrict unnecessary local accounts and privileges while patching is underway.
- Consult Microsoft guidance for release-specific update requirements and prerequisites.
Validation and detection
- Inventory systems against the affected Windows releases and build versions in the CVE record.
- Confirm applicable Microsoft security updates are installed successfully and pending restarts are completed.
- Review update-management reports for failed, deferred, or excluded installations.
- Monitor affected systems for suspicious privilege changes following access by low-privileged accounts.
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-190: 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-2026-35415 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
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/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.
SSVC decision data
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:U/RL:O/RC:C1.85.9microsoftVulnerability 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:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Windows Storage Spaces Controller Elevation of Privilege VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.