Security readout for executives and security teams
Plain-English summary
CVE-2026-25190 is a high-severity Windows GDI issue. Microsoft describes it as an untrusted search path flaw that can let an unauthorized local attacker execute code, with user interaction required. The business risk is broad Windows endpoint and server exposure, especially where patching is delayed.
Executive priority
Treat as a high-priority Windows patching item. It is not cited as actively exploited, but successful exploitation could affect confidentiality, integrity, and availability. Prioritize normal emergency or accelerated patch windows based on asset criticality and exposure.
Technical view
The vulnerability is CWE-426 in Windows GDI with CVSS 3.1 score 7.8, vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Microsoft lists multiple Windows 10, Windows 11, and Windows Server releases as affected. The MSRC reference is tagged as a vendor advisory and patch source.
Likely exposure
Exposure is likely wherever affected Windows client or server versions from the Microsoft advisory remain unpatched. The listed scope includes Windows 10, Windows 11, and Windows Server 2012 through 2025 variants, including Server Core entries.
Exploitation context
No provided source states active exploitation, and KEV is false. The CVSS vector indicates local attack access, low complexity, no privileges required, and required user interaction. The exact interaction path and practical exploitation details are not provided in the source bundle.
Researcher notes
Evidence is limited to CVE/MSRC-style data in the provided bundle. The vulnerability is categorized as untrusted search path in Windows GDI, but sources do not provide root-cause detail, proof of concept, or specific vulnerable file-loading conditions. Avoid assuming remote network exploitability despite the title.
Mitigation direction
- Review the Microsoft MSRC advisory for CVE-2026-25190.
- Apply the Microsoft security update for affected Windows systems.
- Prioritize internet-facing admin workstations, shared servers, and high-value user endpoints.
- Include Server Core systems listed by Microsoft in patch scope.
- If patching is delayed, monitor vendor guidance for supported mitigations.
Validation and detection
- Inventory Windows versions against the affected product list.
- Confirm the relevant Microsoft update is installed.
- Check vulnerability scanner coverage for CVE-2026-25190.
- Validate Server Core installations separately where applicable.
- Track exceptions for systems awaiting vendor-approved remediation.
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-426: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-25190 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:N/UI:R/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.
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:N/UI:R/S:U/C:H/I:H/A:H/E:U/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:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows GDI Remote Code Execution VulnerabilityCVE reference · 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.
Untrusted Search Path
Untrusted Search Path represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.