CVE-2026-32089
Published: 14 April 2026
Summary
CVE-2026-32089 is a high-severity Race Condition (CWE-362) vulnerability in Microsoft Windows 10 21H2. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 16.4th 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 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-32089 is a use-after-free vulnerability (CWE-416, concurrent execution CWE-362) in the Windows Speech Brokered API. It affects Windows operating systems and was published on 2026-04-14T18:17:13.473 with a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
A local attacker with low privileges (PR:L) can exploit this vulnerability due to its low attack complexity (AC:L) and lack of required user interaction (UI:N). Successful exploitation enables privilege escalation, granting high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H) within the local scope (AV:L, S:U).
Microsoft's update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32089 provides details on patches and mitigations for this vulnerability.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-22526
Vulnerability details
Use after free in Windows Speech Brokered Api allows an authorized attacker to elevate privileges locally.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Use-after-free in local Windows API directly enables local privilege escalation from low to high privileges without user interaction.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly remediates the use-after-free vulnerability in Windows Speech Brokered API by applying vendor-provided patches as specified in Microsoft's update guide.
Implements memory protection mechanisms such as DEP and ASLR to prevent unauthorized code execution from use-after-free memory corruption exploits.
Enforces least privilege to restrict the impact of local privilege escalation even if the use-after-free vulnerability is exploited.