Security readout for executives and security teams
Plain-English summary
CVE-2021-31936 is an information disclosure issue in Microsoft Accessibility Insights for Web. The source bundle identifies version 1.0.0 as affected. The CVSS score is high because exploitation is network-reachable, low complexity, requires no privileges, and can expose sensitive information, but it requires user interaction.
Executive priority
Treat as a targeted high-priority cleanup item, not an emergency based on current evidence. Prioritize environments using the affected tool, especially where sensitive web content may be tested.
Technical view
The supplied CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N. This indicates confidentiality impact only, with no stated integrity or availability impact. The bundle does not describe the vulnerable mechanism, trigger, or exact disclosed data.
Likely exposure
Exposure appears limited to organizations with Microsoft Accessibility Insights for Web version 1.0.0 installed or in use. The bundle does not identify other affected versions or related Microsoft products.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation is rated as proof-of-concept in the CVSS temporal vector, but user interaction is required.
Researcher notes
The public bundle is sparse. It provides product, affected version, CVSS, and MSRC reference, but not root cause, attack scenario, or concrete patch version. Avoid broad product assumptions without vendor confirmation.
Mitigation direction
- Inventory systems using Microsoft Accessibility Insights for Web.
- Check Microsoft's MSRC advisory for official remediation guidance.
- Apply Microsoft-provided remediation where the installed version matches the advisory.
- Remove affected version 1.0.0 where the tool is no longer needed.
Validation and detection
- Confirm whether Microsoft Accessibility Insights for Web 1.0.0 is installed.
- Verify remediated systems no longer report the affected version.
- Review MSRC advisory details before closing remediation tickets.
- Document any systems retaining version 1.0.0 as accepted risk.
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.
CVE-2021-31936 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
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/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:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C2.84Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31936CVE 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.