Security Resilience

CVE-2018-8174

Memory Safety in Microsoft Windows Server 2008 r2

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRansomware-linkedMemory Safety
Published
09 May 2018
Modified
13 August 2026
KEV Added
15 February 2022
Patch / advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.88 99.8th percentile
Risk Priority 82 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2018-8174 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 0.2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

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-2018-8174 is a remote code execution vulnerability in the Windows VBScript engine caused by improper handling of objects in memory, classified under CWE-787 as an out-of-bounds write. It affects Windows 7, Windows 8.1, Windows RT 8.1, Windows 10, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, and Windows Server 2016.

An unauthenticated attacker can trigger the flaw over a network with no privileges required, although exploitation requires user interaction and presents high attack complexity. Successful exploitation yields full control over the target system, enabling arbitrary code execution with high impact to confidentiality, integrity, and availability.

Microsoft published an advisory detailing the issue and available updates, while a micropatch approach has also been demonstrated for certain deployments. Public exploit code for the vulnerability is available.

EU & UK References

Vulnerability Data

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows…

more

Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

CWE(s)
KEV Date Added
15 February 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2018-8373Same product: Microsoft Windows 10 1607both on KEV
CVE-2018-8653Same product: Microsoft Windows 10 1607both on KEV
CVE-2019-1367Same product: Microsoft Windows 10 1607both on KEV
CVE-2017-0222Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-0968Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-1020Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-1380Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-1054Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-0938Same product: Microsoft Windows 10 1607both on KEV
CVE-2020-1027Same product: Microsoft Windows 10 1607both on KEV

Affected Assets

microsoft
windows 10 1607
all versions
microsoft
windows 10 1703
all versions
microsoft
windows 10 1709
all versions
microsoft
windows 10 1803
all versions
microsoft
windows 7
all versions
microsoft
windows 8.1
all versions
microsoft
windows rt 8.1
all versions
microsoft
windows server 2008
all versions, r2
microsoft
windows server 2012
all versions, r2
microsoft
windows server 2016
all versions

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

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.

ID.RA-01 partial match
blocks

Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.

PR.PS-02 partial match
blocks

Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.

PR.PS-06 partial match
blocks

Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.

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.

removes
removes
removes
removes
removes

References