Cyber Resilience

CVE-2025-54106

Memory Safety in Microsoft Windows Server 2012 r2

Published
09 September 2025
Modified
02 October 2025
Patch / advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.014 70th percentile
Risk Priority 67 floored blend · peak EPSS

Summary

CVE-2025-54106 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Microsoft Windows Server 2012. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 30% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2025-54106 is an integer overflow or wraparound vulnerability in the Windows Routing and Remote Access Service (RRAS), published on 2025-09-09T17:15:55.707. It affects Windows systems with RRAS enabled, allowing an unauthorized attacker to execute arbitrary code over a network. The vulnerability has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and is linked to CWE-190.

Attackers can exploit this remotely without privileges by luring users into performing an action, such as interacting with a malicious network packet or resource processed by RRAS. Exploitation triggers the integer overflow, enabling code execution with RRAS service privileges, which could result in high-impact outcomes like unauthorized access, data exfiltration, system takeover, or persistence.

The Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54106 details the issue and urges applying the released security update as the primary mitigation.

EU & UK References

Vulnerability Data

Integer overflow or wraparound in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-47288Same product: Microsoft Windows Server 2012
CVE-2024-38128Same product: Microsoft Windows Server 2012
CVE-2023-29369Same product: Microsoft Windows Server 2012
CVE-2026-25172Same product: Microsoft Windows Server 2012
CVE-2023-36395Same product: Microsoft Windows Server 2012
CVE-2024-49085Same product: Microsoft Windows Server 2012
CVE-2026-26111Same product: Microsoft Windows Server 2012
CVE-2026-35415Same product: Microsoft Windows Server 2012
CVE-2024-49112Same product: Microsoft Windows Server 2012
CVE-2025-21243Same product: Microsoft Windows Server 2012

Affected Assets

microsoft
windows server 2012
r2
microsoft
windows server 2016
≤ 10.0.14393.8422
microsoft
windows server 2019
≤ 10.0.17763.7792
microsoft
windows server 2022
≤ 10.0.20348.4106
microsoft
windows server 2022 23h2
≤ 10.0.25398.1849
microsoft
windows server 2025
≤ 10.0.26100.6508

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V5.2.6

Mitigating Controls (NIST 800-53 r5) AI

Developer testing and evaluation (static analysis, fuzzing, unit tests) directly finds integer overflow defects before deployment.

Secure engineering principles require use of safe arithmetic constructs or language features that structurally eliminate integer overflow during calculation.

Input validation enforces bounds on values before arithmetic, stopping the conditions that trigger overflow or wraparound.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Security testing in development can detect integer overflows before release.

prevents

Secure SDLC mandates input validation and arithmetic checks that prevent integer overflows.

degrades

Application security requirements include bounds checking and safe arithmetic to avoid overflow conditions.

degrades

Secure architecture principles require defensive coding patterns that mitigate integer wraparound risks.

prevents

Secure coding standards explicitly forbid unsafe integer operations and mandate overflow-safe constructs.

References