CVE-2026-32190
Published: 14 April 2026
Summary
CVE-2026-32190 is a high-severity Use After Free (CWE-416) vulnerability. Its CVSS base score is 8.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 24.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-16 (Memory Protection).
Deeper analysis
CVE-2026-32190 is a use-after-free vulnerability (CWE-416) affecting Microsoft Office. Published on 2026-04-14, it carries a CVSS v3.1 base score of 8.4 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact on confidentiality, integrity, and availability.
An unauthorized local attacker can exploit this vulnerability with low complexity and no user interaction required, as no privileges are needed (PR:N). Successful exploitation enables arbitrary code execution on the affected system.
Microsoft's update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32190 provides details on patches and mitigation steps for addressing this issue.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-22571
Vulnerability details
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Use-after-free in Microsoft Office client app directly enables local arbitrary code execution (AV:L/PR:N/UI:N) via exploitation of client software vulnerability.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires timely remediation of known flaws like this use-after-free vulnerability in Microsoft Office through vendor patches.
Implements memory protections such as DEP and ASLR that directly mitigate use-after-free exploits by preventing unauthorized code execution.
Mandates vulnerability scanning to identify systems affected by CVE-2026-32190 in Microsoft Office.