CVE-2026-23666
.NET Framework Denial of Service Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.0.50727.8982 & 3.0.30729.8976, 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0, 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0, 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0, 4.8.4801.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Microsoft Microsoft .NET Framework 3.5
From 3.5.0 · fixed in 2.0.50727.8982 & 3.0.30729.8976
- Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
From 4.7.0 · fixed in 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0
- Microsoft Microsoft .NET Framework 3.5 AND 4.8
From 4.8.0 · fixed in 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0
- Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
From 4.8.1 · fixed in 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0
- Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
From 4.7.0 · fixed in 4.8.4801.0
- Microsoft Microsoft .NET Framework 4.8
From 4.8.0 · fixed in 4.8.4801.0