Red Hat Security Advisory: .NET 8.0 security update
Affects Red Hat .NET 8.0Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.2 Medium · fixed in Red Hat package updates : update Red Hat .NET 8.0 when convenient.
Data as of 6 Nov 2026, 01:50 UTC
- Patch
- Available – fixed in 10.0.9, 8.0.28, 9.0.17
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 9 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Upgrade .NET to 10.0.9 (10.0) or 8.0.28 (8.0) or 9.0.17 (9.0).
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft.NET 10.0 | Affected
| Fixed in
|
| Microsoft.NET 8.0 | Affected
| Fixed in
|
| Microsoft.NET 8.0 | Affected
| Fixed in
|
| Microsoft.NET 9.0 | Affected
| Fixed in
|
AI-suggested
Apply the Red Hat updates for .NET SDK 8.0.128 and .NET Runtime 8.0.28 as provided in advisory RHSA-2026:25110. These updates fix the identified vulnerabilities. Refer to https://access.redhat.com/articles/11258 for detailed update instructions. No additional mitigation steps are indicated by the vendor advisory.
Description
.NET 8.0 has security vulnerabilities including a local file tampering issue via link following (CVE-2026-45491) and an ASP.NET Core denial of service via uncontrolled resource consumption (CVE-2026-45591). Red Hat has released updated .NET SDK 8.0.128 and .NET Runtime 8.0.28 packages to address these issues. The vulnerabilities affect Red Hat Enterprise Linux 8 and related products. The update is rated as Important by Red Hat Product Security.
References
- access.redhat.com/errata/RHSA-2026:25110 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2487164 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2487224 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_25110.json (opens in a new tab)