CVE-2026-83748

9.8Critical

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

9.8Critical

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-122

Impact

Unauthenticated attackers can execute arbitrary code over the network. They only need network connectivity to the vulnerable Windows Error Reporting service.

Root cause

A heap-based buffer overflow in the Windows Error Reporting component corrupts memory during input processing.

Affected systems

Versions not listed — check the vendor advisory.

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

Fix & remediation

Install the official Windows update from MSRC advisory CVE-2026-83748; as a temporary mitigation, disable or restrict network access to the Windows Error Reporting service (WerSvc).

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

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NVD description

Heap-based buffer overflow in Windows Error Reporting allows an unauthorized attacker to execute code over a network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83748

Source: nvd.nist.gov/vuln/detail/CVE-2026-83748