CVE-2026-83908

7.0High

Published 13 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash

7.0High

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-763

Impact

A local attacker with standard user privileges can elevate to SYSTEM/admin access. Exploitation requires existing local shell access or code execution on the host.

Root cause

The RPC Runtime improperly frees an invalid memory pointer or reference during execution.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the official security update provided by Microsoft in the MSRC advisory; no workaround or interim mitigation is currently documented.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83908

Source: nvd.nist.gov/vuln/detail/CVE-2026-83908