01 Record
CVE-2021-40454
Rich Text Edit Control Information Disclosure Vulnerability
MediumPUBLISHEDCNA: microsoft
CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
02 Description
Rich Text Edit Control Information Disclosure Vulnerability
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.49% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 42.4% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-10-13 00:26Z5 YR AGO
- Last updated
- 2024-08-04 02:44Z2 YR AGO
- Reserved
- 2021-09-02
- Assigning CNA
- microsoft
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.5)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
- Weaknesses
- CWE-312Cleartext Storage of Sensitive InformationBase
- Data version
- 5.1
- Document digest
- 286c4b9b28c9cc9ee45c618b06bba38ab9373c59afd8479317c63316e5f72b04
05 Affected products
VendorProductVersionsPlatforms
MicrosoftWindows 10 Version 180910.0.0 to < 10.0.17763.223732-bit Systems, x64-based Systems, ARM64-based Systems
MicrosoftWindows 10 Version 190910.0.0 to < 10.0.18363.185432-bit Systems, x64-based Systems, ARM64-based Systems
MicrosoftWindows 10 Version 21H110.0.0 to < 10.0.19043.1288x64-based Systems, ARM64-based Systems, 32-bit Systems
MicrosoftWindows 10 Version 200410.0.0 to < 10.0.19041.128832-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.0 to < 6.3.9600.20144x64-based Systems
MicrosoftMicrosoft Office 201919.0.0 to < https://aka.ms/OfficeSecurityReleases32-bit Systems, x64-based Systems
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1 to < https://aka.ms/OfficeSecurityReleases32-bit Systems, x64-based Systems
MicrosoftMicrosoft Office 2013 Service Pack 115.0.0 to < 15.0.5389.1000ARM64-based Systems, 32-bit Systems, x64-based Systems
MicrosoftMicrosoft Office LTSC 202116.0.1 to < https://aka.ms/OfficeSecurityReleasesx64-based Systems, 32-bit Systems
06 References
- portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40454