CVE tracker / CVE-2025-49673

CVE-2025-49673

CVE-2025-49673 is the Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability. Microsoft rates it Important, CVSS 8.8. It is not in CISA's Known Exploited Vulnerabilities catalog. Published July 8, 2025.

Risk summary

HighRemote Code Execution

8.8

CVSS v3 base

0.9%

EPSS: chance of exploitation in 30 days

High

Severity

Important

Microsoft's rating

Unlikely

Microsoft: exploitation

In CISA KEV

Microsoft describes it: “Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.”

How to fix it

Microsoft lists 19 affected products and the update that fixes each:

KB5062553 · fixed build 10.0.26100.4652
Windows Server 2025, Windows Server 2025 (Server Core installation)
KB5062557 · fixed build 10.0.17763.7558
Windows Server 2019 (Server Core installation), Windows Server 2019
KB5062560 · fixed build 10.0.14393.8246
Windows Server 2016 (Server Core installation), Windows Server 2016
KB5062570 · fixed build 10.0.25398.1732
Windows Server 2022, 23H2 Edition (Server Core installation)
KB5062572 · fixed build 10.0.20348.3932
Windows Server 2022 (Server Core installation), Windows Server 2022
KB5062592 · fixed build 6.2.9200.25573
Windows Server 2012 (Server Core installation), Windows Server 2012
KB5062597 · fixed build 6.3.9600.22676
Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2
KB5062624 · fixed build 6.0.6003.23418
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation), Windows Server 2008 for x64-based Systems Service Pack 2, Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation), Windows Server 2008 for 32-bit Systems Service Pack 2
KB5062632 · fixed build 6.1.7601.27820
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1

What Microsoft changed

July 8, 2025: Information published.

Details

Weakness: CWE-122: Heap-based Buffer Overflow
Publicly disclosed (Microsoft): No
Exploited (Microsoft): No
Known exploited (CISA KEV): Not listed
Published: July 8, 2025
Last revised: July 8, 2025

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.