Security readout for executives and security teams
Plain-English summary
CVE-2023-35308 is a Microsoft Windows MSHTML security feature bypass. The provided data rates it medium severity, with low integrity and availability impact and no confidentiality impact. Business urgency is mainly patch hygiene: systems on listed Windows client and server versions may remain exposed if they missed Microsoft’s official update.
Executive priority
Handle through normal monthly Windows patch governance unless local exposure or compliance deadlines require acceleration. The absence of KEV evidence lowers emergency priority, but broad Windows exposure makes missed patching operationally important.
Technical view
The CVE affects the Windows MSHTML Platform across listed Windows 10, Windows 11, and Windows Server releases. The CVSS 3.1 score is 6.5 with network attack vector, low complexity, no privileges, and no user interaction. Microsoft identifies it as CWE-73 and lists an official remediation as available.
Likely exposure
Exposure is most likely in organizations running affected Windows 10, Windows 11, Windows Server 2012 R2, 2016, 2019, or 2022 systems that have not applied Microsoft’s relevant security update.
Exploitation context
The provided bundle does not show CISA KEV listing or cited evidence of active exploitation. CVSS exploit maturity is marked unproven. Treat this as a real patching issue, not as confirmed exploitation from the supplied evidence.
Researcher notes
Key constraints are limited detail and no exploit narrative in the supplied sources. The useful technical anchors are MSHTML Platform, CWE-73, CVSS vector, affected Windows releases, and Microsoft’s official remediation availability.
Mitigation direction
- Apply Microsoft’s official update for CVE-2023-35308 on affected systems.
- Check the MSRC entry for OS-specific update guidance.
- Include Server Core installations in the remediation scope.
- Prioritize systems that process untrusted web or document content.
Validation and detection
- Inventory Windows versions against the affected product list.
- Confirm installed updates match Microsoft’s CVE guidance.
- Verify vulnerability scanners detect CVE-2023-35308 coverage.
- Review patch records for missed legacy Windows Server systems.
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-73: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupCVE-2023-35308 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows MSHTML Platform Security Feature Bypass VulnerabilityCVE reference · vendor-advisory
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.
External Control of File Name or Path
External Control of File Name or Path represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.