Cyber Resilience

CVE-2016-7201

Memory Safety in Microsoft Edge

CISA KEVActive ExploitationEUVD ExploitedPublic PoCMemory Safety
Published
10 November 2016
Modified
22 April 2026
KEV Added
28 March 2022
Patch / advisory
View 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 0.80 99.6th percentile
Risk Priority 90 floored blend · peak EPSS

Summary

CVE-2016-7201 is a high-severity Type Confusion (CWE-843) vulnerability in Microsoft Edge. 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 0.4% 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.

The vulnerability is a memory corruption issue, tracked as CWE-843, in the Chakra JavaScript scripting engine used by Microsoft Edge. It affects the browser's handling of crafted web content and is distinct from several related scripting engine flaws disclosed at the same time.

Remote attackers can exploit the flaw by serving a malicious website that triggers the corruption when rendered in Edge. Successful exploitation yields arbitrary code execution in the context of the current user or a denial of service through memory corruption, with the CVSS vector reflecting network attack vector, low complexity, and required user interaction via page visitation.

Microsoft's security bulletin MS16-129 addresses the issue and supplies patches that resolve the vulnerability in supported Edge installations. Additional references, including public proof-of-concept material on GitHub and Packet Storm, confirm the availability of demonstration code for the type-confusion path.

The issue received an 8.8 CVSS score and was published in November 2016 alongside multiple other Chakra-related CVEs.

EU & UK References

Vulnerability Data

The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7200, CVE-2016-7202,…

more

CVE-2016-7203, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.

CWE(s)
CWE-843
KEV Date Added
28 March 2022

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.
attack.mitre.org →
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.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2017-0037Same product: Microsoft Edgeboth on KEV
CVE-2016-7200Same product: Microsoft Edgeboth on KEV
CVE-2024-38178Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-0752Same product: Microsoft Windows 10 1507both on KEV
CVE-2025-30397Same product: Microsoft Windows 10 1507both on KEV
CVE-2022-41033Same product: Microsoft Windows 10 1507both on KEV
CVE-2026-21519Same product: Microsoft Windows 10 1607both on KEV
CVE-2018-8298Same vendor: Microsoftboth on KEV
CVE-2023-29336Same product: Microsoft Windows 10 1507both on KEV
CVE-2017-0263Same product: Microsoft Windows 10 1507both on KEV

Affected Assets

microsoft
edge
all versions

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)
  • V1.5.2
  • V3.2.3
  • V15.3.5

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 prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

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.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect type-confusion vulnerabilities through fuzzing and static analysis.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates type-safe design and review that can catch type-confusion flaws.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify strong typing and interface contracts that reduce type confusion.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles promote type-safe languages and memory-safety mechanisms that mitigate type confusion.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly forbid unsafe type casts and require static-analysis checks for type confusion.

References