---
title: "CVE-2026-71343: Windows Remote Access Connection Manager - Buffer Overflow"
description: "Windows Remote Access Connection Manager contains a heap-based buffer overflow, letting authorized attackers execute code locally, exploit requires attacker to be authorized."
url: https://panop.io/threat-heartbeat/CVE-2026-71343/
---

# CVE-2026-71343 Windows Remote Access Connection Manager - Buffer Overflow

Windows Remote Access Connection Manager contains a heap-based buffer overflow, letting authorized attackers execute code locally, exploit requires attacker to be authorized.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.33% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-71343)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

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

Published

8 September 2026

Updated

15 October 2026

Weakness

[CWE-122](https://cwe.mitre.org/data/definitions/122.html)

## Vendor fix

Update to the latest version of Windows with security patches applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-71343](https://nvd.nist.gov/vuln/detail/CVE-2026-71343)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71343](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71343)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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