Security readout for executives and security teams
Plain-English summary
This is a high-severity remote code execution issue in Microsoft Edge (Chromium-based). The CVSS data indicates a victim must interact with something, but no privileges are needed. A successful attack could let code run with serious confidentiality, integrity, and availability impact. No provided source confirms active exploitation.
Executive priority
Prioritize remediation in normal high-severity patch cycles, faster for privileged workstations or update-lagging fleets. The impact is severe, but supplied evidence does not show active exploitation.
Technical view
CVE-2023-36887 is listed as a CWE-843 type-confusion remote code execution vulnerability in Microsoft Edge (Chromium-based). CVSS 3.1 score is 7.8 with local attack vector, low complexity, no privileges required, and user interaction required. Microsoft indicates an official fix exists, but the bundle does not provide exact fixed versions.
Likely exposure
Organizations with Microsoft Edge (Chromium-based) deployed on desktops or servers are potentially exposed, especially where browser updates are delayed. The source bundle names version 1.0.0 but provides limited affected-version detail, so confirm exposure through Microsoft’s advisory and fleet inventory.
Exploitation context
The bundle reports no CISA KEV listing and CVSS exploit maturity is unproven. Treat this as a serious browser RCE risk, but do not assume active exploitation from the supplied evidence.
Researcher notes
Key uncertainty is affected-version precision. The bundle lists Edge Chromium-based and version 1.0.0, while Microsoft’s advisory should be treated as authoritative for release applicability and fixed builds. Avoid inferring exploitability beyond the CVSS vector and linked advisories.
Mitigation direction
- Review Microsoft’s advisory for affected and fixed Edge releases.
- Update Microsoft Edge through the official Microsoft channel.
- Confirm enterprise update policies are not pinning vulnerable Edge builds.
- Prioritize managed endpoints used for privileged administration.
- Monitor vendor guidance for any revised affected-version details.
Validation and detection
- Inventory installed Microsoft Edge versions across managed endpoints.
- Compare installed versions with Microsoft’s CVE-2023-36887 guidance.
- Verify Edge update policy and update telemetry show successful rollout.
- Check vulnerability management tools for CVE-2023-36887 detections.
- Document any systems excluded from automatic browser updates.
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-2023-36887 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
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.
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Edge (Chromium-based) Remote Code Execution VulnerabilityCVE reference · vendor-advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1747CVE reference · x_transferred
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.