Security 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

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

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 Junk Data (T1001.001); 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

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
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-2019-0752Same product: Microsoft Windows 10 1507both on KEV
CVE-2024-38178Same 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
  • 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 partial match
blocks

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.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References