CVE-2022-21911: microsoft microsoft .net framework 2.0 service pack 2
CVSS: 7.5v3.1HighModified
Published 11-01-2022Last modified 02-01-2025
Vulnerability summary
CVE-2022-21911 is a high (CVSS 7.5) vulnerability in microsoft microsoft .net framework 2.0 service pack 2. EPSS estimates a 3.05% chance of exploitation in the next 30 days, higher than 87.3% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
3.05%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-01-2022PublishedVulnerability first disclosed.
- 02-01-2025Last modifiedVulnerability information updated.
Description
.NET Framework Denial of Service Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
3.05%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
0.00 pp
From 3.05% on 19-09-2026
19-09-202619-10-2026
EPSS score3.05%
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
- microsoft .net framework 2.0 service pack 2≥ 2.0.0, < 2.0.50727.8955
- microsoft .net framework 3.5≥ 3.5.0, < 2.0.50727.8955
- microsoft .net framework 3.5 and 4.6.2/4.7/4.7.1/4.7.2≥ 3.0.0.0, < 10.0.14393.4886
- microsoft .net framework 3.5 and 4.7.2≥ 4.7.0, < 4.7.3905.0
- microsoft .net framework 3.5 and 4.8≥ 4.8.0, < 4.8.4465.0
1 vendor · 11 products
References
2 links- msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21911Vendor Advisory
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21911X Refsource MISCX Transferred