CVE-2021-43877: microsoft asp.net_core
CVSS: 8.8v3.1HighModified
Published 15-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-43877 is a high (CVSS 8.8) vulnerability in microsoft asp.net_core. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.73%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 15-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST8.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.73%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
+0.02 pp
From 0.72% on 18-09-2026
18-09-202618-10-2026
EPSS score0.73%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft11 products
- asp.net_core3.1 | 5.0 | 6.0
- asp.net core 3.1≥ 3.0, < 3.1.22
- asp.net core 5.0≥ 5.0, < 5.0.13
- asp.net core 6.0≥ 6.0, < 6.0.101
- microsoft visual studio 2019 version 16.11 (includes 16.0 - 16.10)≥ 16.11.0, < 16.11.8
1 vendor · 11 products
References
1 links- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877X Refsource MISCPatchVendor Advisory