CVE-2021-43877
mediumpriority · track · 18EPSS 0.007 · 54 %ileEURUUSgrimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.73% (54th) EPSS
CVSS 4.6 · medium
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · nvd
EPSS · scored 2026-10-27
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
01
cvss
Technical severity, 0–10. One row per scoring source.
8.8
010
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.9–8.8
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NVD / NIST USexploitability 1.8 · impact 5.9
v3.18.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 2 · impact 6
02
weaknesses
The CWE weakness classes this flaw belongs to.
03
affected products (26)
Products and version ranges known to be affected.
showing 20 of 26
04
advisories (1)
Vendor and ecosystem advisories describing this.
- BIT-aspnet-core-2021-43877ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability2024-03-06vendor · osvUS
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
05
also known as (3)
Other names and identifiers for this entity.
06
sources
Which sources assert this record, and when.
07
references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2021-43877cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43877cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-43877cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021121451cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877enisa_euvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877PatchVendor 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