CVE-2025-27487: Heap-based buffer overflow in Remote Desktop Client allows an authorized attacker to execute code over a network

High severity · published Apr 8, 2025

CVE-2025-27487

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

8.0

CVSS

1.5%

EPSS

On KEV

Description

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

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.5% · higher than 74% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Remote Desktop Client · Microsoft

before 1.2.6081 · source: NVD

Windows 10 1507 · Microsoft

before 10.0.10240.20978; before 10.0.10240.20978 · source: NVD

Windows 10 1607 · Microsoft

before 10.0.14393.7969; before 10.0.14393.7969 · source: NVD

Windows 10 1809 · Microsoft

before 10.0.17763.7136; before 10.0.17763.7136 · source: NVD

Windows 10 21h2 · Microsoft

before 10.0.19044.5737 · source: NVD

Windows 10 22h2 · Microsoft

before 10.0.19045.5737 · source: NVD

Windows 11 22h2 · Microsoft

before 10.0.22621.5189 · source: NVD

Windows 11 23h2 · Microsoft

before 10.0.22631.5189 · source: NVD

Windows 11 24h2 · Microsoft

before 10.0.26100.3775 · source: NVD

Windows App · Microsoft

before 2.0.379.0 · source: NVD

Windows Server 2008 · Microsoft

r2 · source: NVD

Windows Server 2012 · Microsoft

r2 · source: NVD

Affected product

Remote Desktop Client

Microsoft

All Remote Desktop Client CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-27487

CVE.org

https://www.cve.org/CVERecord?id=CVE-2025-27487

Vendor Advisory

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27487