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CVE-2025-26646VulnerabilityPublished Updated

Red Hat Security Advisory: .NET 8.0 security update

Affects Red Hat .NET 8.0Source GCVE Database

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Not known to be exploited.

Data as of 5 Nov 2026, 18:37 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

AI-suggested

Red Hat has released fixed versions: .NET SDK 8.0.116 and .NET Runtime 8.0.16. Users should apply these updates following Red Hat's official update instructions available at https://access.redhat.com/articles/11258. Applying these updates mitigates the spoofing vulnerability. No additional or alternative mitigations are indicated by the vendor advisory.

Description

.NET 8.0 for Red Hat Enterprise Linux contains a security vulnerability identified as CVE-2025-26646, related to spoofing in .NET and Visual Studio. Red Hat has released updated versions, .NET SDK 8.0.116 and .NET Runtime 8.0.16, to address this issue. The vulnerability is rated as important by Red Hat Product Security. The update is available for multiple Red Hat Enterprise Linux 9 variants and architectures. Users are advised to apply the update as per Red Hat's guidance.

References

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