CVE-2023-21722 json
.NET Framework Denial of Service Vulnerability
published 2023-02-14 3 y ago modified 2026-08-19 2 mo ago also EUVD-2023-25889
- cvss
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
.NET Framework Denial of Service Vulnerability
Patch / fix
- Microsoft Microsoft .NET Framework 2.0 Service Pack 2 2.0.50727.8966
- Microsoft Microsoft .NET Framework 3.0 Service Pack 2 2.0.50727.8966
- Microsoft Microsoft .NET Framework 3.5 3.5.50727.8966
- Microsoft Microsoft .NET Framework 3.5 and 4.6.2 10.0.10240.19747
- Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 10.0.04038.03
- Microsoft Microsoft .NET Framework 3.5 AND 4.8 10.0.04614.06
- Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 10.0.09139.02
- Microsoft Microsoft .NET Framework 3.5.1 3.5.50727.8966
- Microsoft Microsoft .NET Framework 4.6.2 4.7.04038.06
- Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.04614.08
- Microsoft Microsoft .NET Framework 4.8 4.8.4614.08
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
Affected products
- Microsoft Microsoft .NET Framework 2.0 Service Pack 2
- Microsoft Microsoft .NET Framework 3.0 Service Pack 2
- Microsoft Microsoft .NET Framework 3.5
- Microsoft Microsoft .NET Framework 3.5 and 4.6.2
- Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
- Microsoft Microsoft .NET Framework 3.5 AND 4.8
- Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
- Microsoft Microsoft .NET Framework 3.5.1
- Microsoft Microsoft .NET Framework 4.6.2
- Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
- Microsoft Microsoft .NET Framework 4.8
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2023-21722
vendor-advisory, patch
Sources
- CVE List CVE-2023-21722
- NVD CVE-2023-21722
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.