CVE-2026-58649
.NET Information Disclosure 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 11.0 RC1, 17.14.40, 18.9.3
- 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: no
- Technical impact: partial
Summary
Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
52 days - Record last updated
Affected versions
- Microsoft .NET 10.0 runtime
Version range not reported
- Microsoft .NET 11.0 runtime
From 11.0.0 · fixed in 11.0 RC1
- Microsoft .NET 8.0 runtime
Version range not reported
- Microsoft .NET 9.0 runtime
Version range not reported
- Microsoft Microsoft Visual Studio 2022 version 17.14
From 17.14.0 · fixed in 17.14.40
- Microsoft Microsoft Visual Studio 2026 version 18.9
From 18.9.0 · fixed in 18.9.3