Security readout for executives and security teams
Plain-English summary
CVE-2016-7200 is a Microsoft Edge Chakra scripting engine memory corruption flaw. A malicious website could let an attacker run code or crash the browser after user interaction. CISA KEV marks it as known exploited, so any remaining vulnerable Edge/Chakra exposure should be treated as urgent legacy risk.
Executive priority
Prioritize remediation for any remaining vulnerable legacy systems. The business risk is code execution through web browsing, backed by KEV known-exploitation status, but exposure may be limited if legacy Edge has been retired.
Technical view
The issue is a Chakra JavaScript engine memory corruption vulnerability in Microsoft Edge, categorized as CWE-787. The CVSS 3.1 vector is 8.8: network attack, low complexity, no privileges, user interaction required, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on legacy Microsoft Edge installations using the vulnerable Chakra engine and missing the MS16-129-era security update. The source bundle does not provide exact affected versions or CPEs.
Exploitation context
CISA KEV support indicates known exploitation. Public exploit references are listed, but the bundle does not provide campaign details, targets, exploitation volume, or current weaponization context.
Researcher notes
The bundle names Microsoft Edge Chakra and CWE-787, with CVSS 8.8 and KEV status. It does not include precise affected versions, patch supersedence, exploit telemetry, or safe detection artifacts, so validation should rely on vendor update state and asset inventory.
Mitigation direction
- Apply Microsoft MS16-129 guidance where applicable.
- Inventory legacy Microsoft Edge and Chakra-based systems.
- Remove or upgrade unsupported vulnerable browser environments.
- Limit vulnerable browsers from accessing untrusted websites until remediated.
- Check Microsoft guidance for exact platform-specific update requirements.
Validation and detection
- Confirm whether Microsoft Edge with Chakra exists in the environment.
- Verify MS16-129 or superseding Microsoft updates are installed.
- Review browser fleet, VDI, kiosk, and legacy endpoint inventories.
- Check vulnerability scanner findings for CVE-2016-7200.
- Prioritize systems still used for web browsing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2016-7200 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- MS16-129CVE reference · vendor-advisory, x_refsource_MS
- 40785CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://github.com/theori-io/chakra-2016-11CVE reference · x_refsource_MISC
- 40990CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7200CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.