Security readout for executives and security teams
Plain-English summary
CVE-2019-0752 is a memory-corruption flaw in Internet Explorer’s scripting engine. An attacker can use malicious web content to pursue remote code execution, but exploitation requires user interaction and is technically complex. Successful exploitation could seriously compromise data, system integrity, and availability.
Executive priority
Treat this as a high-priority legacy-technology exposure because CISA confirms known exploitation and successful attacks can cause full security impact. Accelerate patch verification and Internet Explorer retirement, prioritizing systems used by privileged personnel or exposed to untrusted content.
Technical view
Internet Explorer 10 and 11 can mishandle objects in memory, aligning with CWE-843 type confusion. The CVSS 3.1 score is 7.5: network-accessible, high complexity, no privileges required, and user interaction required, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure exists where listed Windows systems still have affected Internet Explorer 10 or 11 components available, including legacy desktops and servers. Inventory should include systems retaining Internet Explorer for compatibility, even when another browser is the default. The bundle provides no configuration-specific exclusions.
Exploitation context
CISA lists CVE-2019-0752 in its Known Exploited Vulnerabilities catalog, supporting confirmed exploitation in the wild. The supplied evidence does not establish current campaign volume, targeted sectors, public exploit reliability, or whether exploitation remains widespread.
Researcher notes
The supplied data identifies scripting-engine memory corruption and CWE-843 but does not provide the precise faulty object lifecycle, exploit primitives, patch identifiers, or reliable detection signatures. Validation should focus on affected-version inventory, vendor-update status, browser policy, and endpoint telemetry without assuming a specific exploit chain.
Mitigation direction
- Review Microsoft’s CVE-2019-0752 guidance and apply the applicable vendor security updates.
- Remove or disable Internet Explorer where business and operating-system requirements permit.
- Restrict legacy Internet Explorer use to explicitly approved internal applications.
- Prioritize affected internet-facing, privileged-user, and high-value systems.
Validation and detection
- Inventory systems containing Internet Explorer 10 or 11 and map them to the listed Windows versions.
- Confirm applicable Microsoft security updates are installed using endpoint or patch-management records.
- Check whether policies still permit Internet Explorer to process untrusted web content.
- Review security telemetry for unexpected Internet Explorer child processes or suspicious activity.
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-843: 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-2019-0752 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
SSVC decision data
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:H1.65.9CISA-ADPVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2019-0752 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2022-02-15T00:00:00.000Z: CVE-2019-0752 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0752CVE reference, microsoft · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-19-359/CVE reference, microsoft · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0752CVE reference, CISA-ADP · 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.
Access of Resource Using Incompatible Type ('Type Confusion')
Access of Resource Using Incompatible Type ('Type Confusion') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.