Security readout for executives and security teams
Plain-English summary
CVE-2020-17106 is a Microsoft HEVC Video Extensions remote code execution vulnerability. Successful exploitation could affect confidentiality, integrity, and availability. The sources do not list affected versions beyond the HEVC Video Extensions product, so exposure depends on installed Microsoft components and vendor guidance.
Executive priority
Treat this as a high-priority endpoint patching issue, especially for users who handle external media. It is not KEV-listed in the provided data, but the potential impact is high and Microsoft guidance should be followed.
Technical view
The CVSS 3.1 vector is 7.8 high: local attack vector, low complexity, no privileges, user interaction required, unchanged scope, and high impact to confidentiality, integrity, and availability. Microsoft is the affected vendor, with an official remediation indicated in the CVSS metadata.
Likely exposure
Organizations are most likely exposed on Windows endpoints where Microsoft HEVC Video Extensions are installed or available for media handling. The source bundle does not identify specific vulnerable versions, deployment channels, or default installation status.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. CVSS indicates user interaction is required, so risk is higher where users process untrusted media content.
Researcher notes
Evidence is limited to CVE/MSRC metadata. No CWE, affected version range, exploit details, or active exploitation evidence is provided. The CVSS vector is important: AV:L and UI:R mean exploitation requires local handling and user interaction, despite the RCE label.
Mitigation direction
- Apply Microsoft guidance and available updates for HEVC Video Extensions.
- Inventory endpoints for installed Microsoft HEVC Video Extensions.
- Prioritize systems used to view or process untrusted media files.
- Restrict unnecessary HEVC components where business use is not required.
- Monitor Microsoft advisory updates for version-specific remediation details.
Validation and detection
- Confirm whether HEVC Video Extensions are installed on managed endpoints.
- Check patch compliance against the Microsoft advisory for CVE-2020-17106.
- Review software inventory for unmanaged or personally installed media extensions.
- Verify endpoint controls cover untrusted media file handling.
- Document any exception where the extension remains installed but unpatched.
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.
Execution 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-2020-17106 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
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17106CVE reference · x_refsource_MISC
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.