CVE-2026-26151
Microsoft Windows 10 21H2 ≤ 10.0.19044.7184
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:NSummary
CVE-2026-26151 is a high-severity Insufficient UI Warning of Dangerous Operations (CWE-357) vulnerability in Microsoft Windows 10 21H2. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique User Execution (T1204); ranked in the top 46% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-26151 is a vulnerability in Windows Remote Desktop stemming from insufficient UI warnings for dangerous operations, which allows an unauthorized attacker to perform spoofing over a network. Published on 2026-04-14, it carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N) and maps to CWE-357.
The attack requires no privileges and can be launched over the network with low complexity, though it demands user interaction. Successful exploitation enables high-impact confidentiality violations alongside low-impact integrity alterations, such as spoofing to trick users into disclosing sensitive information.
For mitigation guidance and patch details, refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26151.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-22372
Vulnerability Data
Insufficient ui warning of dangerous operations in Windows Remote Desktop allows an unauthorized attacker to perform spoofing over a network.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly encompass designing noticeable UI warnings for risky operations.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development and acceptance validates that dangerous-operation warnings are sufficiently prominent.
Secure development lifecycle requires usable security prompts and warnings to be designed into the UI.
Application security requirements include clear, effective user warnings for dangerous operations.
Secure system architecture and engineering principles address usable security mechanisms such as prominent warnings.
Secure coding practices include implementing noticeable, effective UI warnings for risky actions.