Red Hat Security Advisory: .NET 10.0 security update
Affects Red Hat .NET 10.0Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.2 Medium · fixed in Red Hat package updates : update Red Hat .NET 10.0 when convenient.
Data as of 6 Nov 2026, 01:49 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 security updates by upgrading to .NET SDK 10.0.109 and .NET Runtime 10.0.9 as provided by Red Hat for the affected Red Hat Enterprise Linux 10 variants. Refer to Red Hat's official update article (https://access.redhat.com/articles/11258) for detailed instructions. No additional mitigation steps are indicated beyond applying the official patches.
Description
.NET 10.0 on Red Hat Enterprise Linux has two security vulnerabilities addressed in updated versions .NET SDK 10.0.109 and .NET Runtime 10.0.9. The first vulnerability (CVE-2026-45491) involves local file tampering via link following. The second (CVE-2026-45591) is a denial of service in ASP.NET Core caused by uncontrolled resource consumption. These issues have been rated as important by Red Hat Product Security. Updated packages are available for multiple Red Hat Enterprise Linux 10 variants and architectures.
References
- access.redhat.com/errata/RHSA-2026:25115 (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_25115.json (opens in a new tab)