---
id: CVE-2026-80077
title: >-
  Heap-based buffer overflow in Remote Desktop Client allows an unauthorized
  attacker to execute code over a network.
summary: >-
  Heap-based buffer overflow in Remote Desktop Client allows an unauthorized
  attacker to execute code over a network.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: microsoft
product: remote_desktop_client
affected:
  - remote_desktop_client < 1.2.7279
patched:
  - remote_desktop_client 1.2.7279
published: '2026-09-08'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T13:20:12.967'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80077'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80077'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00607
epssPercentile: 0.47734
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:25:39.817688Z'
ingestedAt: '2026-09-08T19:08:49.630Z'
---

## Overview

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

## Affected

- `remote_desktop_client < 1.2.7279`

## Remediation

Upgrade past the affected range:

- `remote_desktop_client 1.2.7279`