CVE-2021-31174
lowpriority · track · 9EPSS 0.029 · 87 %ileEURUUSgrimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
2.94% (87th) EPSS
CVSS 2.1 · low
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · nvd
EPSS · scored 2026-10-27
Microsoft Excel Information Disclosure Vulnerability
01
cvss
Technical severity, 0–10. One row per scoring source.
5.5
010
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.8–5.5
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · NVD / NIST USexploitability 1.8 · impact 3.6
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · secure@microsoft.com USexploitability 1.8 · impact 3.6
02
weaknesses
The CWE weakness classes this flaw belongs to.
03
affected products (26)
Products and version ranges known to be affected.
- Microsoft Microsoft 365 Apps for Enterprise16.0.1 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
showing 20 of 26
04
also known as (4)
Other names and identifiers for this entity.
05
sources
Which sources assert this record, and when.
07
references (6)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31174cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31174cnnvd
- https://vigilance.fr/vulnerability/Microsoft-Office-vulnerabilities-of-May-2021-35379cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021051131cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31174enisa_euvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31174PatchVendor Advisorynvd
scry
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan