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CVE-2025-29966

Remote Desktop Client Remote Code Execution Vulnerability

No known exploitation. EPSS puts it in the 72nd percentile. Fixed versions are out.

CVSS 3.18.8HighEPSS percentile72nd1.4% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix5 products9 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft Windows 10 Version 1507Affected: ≥ 10.0.10240.0, < 10.0.10240.21014Upgrade to: 10.0.10240.21014Affected: ≥ 10.0.14393.0, < 10.0.14393.8066Upgrade to: 10.0.14393.8066Affected: ≥ 10.0.17763.0, < 10.0.17763.7314Upgrade to: 10.0.17763.7314Affected: ≥ 10.0.19044.0, < 10.0.19044.5854Upgrade to: 10.0.19044.5854 + 1 more branchStated by: CVE record
  • Microsoft Windows 11 version 22H2Affected: ≥ 10.0.22621.0, < 10.0.22621.5335Upgrade to: 10.0.22621.5335Affected: ≥ 10.0.22631.0, < 10.0.22631.5335Upgrade to: 10.0.22631.5335Affected: ≥ 10.0.26100.0, < 10.0.26100.4061Upgrade to: 10.0.26100.4061Stated by: CVE record
  • Microsoft Windows Server 2016Affected: ≥ 10.0.14393.0, < 10.0.14393.8066Upgrade to: 10.0.14393.8066Stated by: CVE record
  • Microsoft Windows Server 2019Affected: ≥ 10.0.17763.0, < 10.0.17763.7314Upgrade to: 10.0.17763.7314Stated by: CVE record
  • Microsoft Windows Server 2022Affected: ≥ 10.0.20348.0, < 10.0.20348.3692Upgrade to: 10.0.20348.3692Affected: ≥ 10.0.25398.0, < 10.0.25398.1611Upgrade to: 10.0.25398.1611Stated by: CVE record

Versions as the sources state them. 8 more products have version data. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS72nd
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.4% chance of exploitation activity in the next 30 days, which ranks it in the 72nd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

6 events over 408 days, from the signal feeds we watch.

  1. OpenVAS check added
  2. Patch availablerecord updated
  3. Publishedweakness classified, att&ck mapped

Affected products

And 59 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 8.8 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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We'll flag the next CVE, public exploit or patch for Remote Desktop, not every advisory.