Multiple vulnerabilities in Microsoft Windows Routing and Remote Access Service (RRAS)

Published: 2025-02-11 | Updated: 2025-03-10

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2025-21208 CVE-2025-21410
CWE-ID	CWE-122
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU103799

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-21208

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Windows Routing and Remote Access Service (RRAS). A remote attacker can trick a victim to connect to a malicious server, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2008 R2 6.1.7601.27117 - 2025 10.0.26100.2894

CPE2.3

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21208

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer overflow

EUVDB-ID: #VU103800