What is the CVSS score of CVE-2025-49729?

CVE-2025-49729 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows Server 2012 are affected by CVE-2025-49729?

CVE-2025-49729 is a critical remote code execution vulnerability in Windows RRAS that enables unauthenticated attackers to compromise servers without valid credentials, potentially allowing lateral…. A patch is available.

How to fix or mitigate CVE-2025-49729?

Within 24 hours: inventory all systems running Windows RRAS and assess network exposure; isolate or restrict network access to RRAS services if patching cannot be completed immediately. Within 7 days: apply vendor-released patch to all RRAS-enabled systems and validate successful deployment. Within 30 days: conduct post-patch validation testing and review RRAS access logs for signs of exploitation attempts.

Windows Server 2012 CVE-2025-49729

EUVD-2025-20545 HIGH

Heap-based Buffer Overflow (CWE-122)

2025-07-08 secure@microsoft.com

Microsoft Heap Overflow Buffer Overflow Windows Server 2012 Windows Server 2019 Windows Server 2022 23h2 Windows Server 2016 Windows Server 2008 Windows Server 2025 Windows Server 2022 Windows

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:29 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

6.1.7601.27820,6.2.9200.25573,10.0.25398.1732

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20545

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:16 nvd

HIGH 8.8

DescriptionCVE.org

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

Analysis

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

Technical ContextAI

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Heap-based Buffer Overflow (CWE-122).