Security readout for executives and security teams
Plain-English summary
CVE-2019-1367 is a Microsoft Internet Explorer scripting engine memory corruption flaw that can allow remote code execution. It requires user interaction, such as handling malicious web content. CISA lists it in the Known Exploited Vulnerabilities catalog, so treat remaining affected IE exposure as urgent legacy risk.
Executive priority
Prioritize remediation for any remaining affected Internet Explorer estate. The vulnerability is older, but KEV status means exploitation has been observed and unmanaged legacy systems remain business-relevant risk.
Technical view
The issue is CWE-787 memory corruption in Internet Explorer’s scripting engine object handling. CVSS 3.1 is 7.5 with network attack vector, high complexity, no privileges required, and user interaction required. Successful exploitation can affect confidentiality, integrity, and availability.
Likely exposure
Exposure is most likely on systems still running affected Internet Explorer 9, 10, or 11 versions across the listed Windows client and server releases.
Exploitation context
Active exploitation is supported by CISA KEV inclusion. The provided sources do not describe exploit volume, campaigns, payloads, or current targeting.
Researcher notes
Do not assume scope beyond the listed Internet Explorer products and Windows versions. The bundle confirms KEV status but provides no exploit mechanics, campaign attribution, or specific KB-level fix details.
Mitigation direction
- Review the MSRC advisory for applicable Microsoft guidance and updates.
- Prioritize affected systems because CISA KEV confirms known exploitation.
- Remove or disable Internet Explorer exposure where business use is no longer required.
- Restrict users from browsing untrusted content with affected Internet Explorer versions.
- Confirm legacy Windows and Server assets are covered by vendor-supported remediation paths.
Validation and detection
- Inventory hosts with Internet Explorer 9, 10, or 11 installed or enabled.
- Map each host OS version against the affected product list.
- Check patch status against the MSRC advisory for CVE-2019-1367.
- Review browser usage telemetry for remaining Internet Explorer activity.
- Confirm compensating controls for systems that cannot be remediated immediately.
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-2019-1367 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
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:H/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:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1367CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1367CVE 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.