Red Hat Security Advisory: .NET 10.0 security update
Affects Red Hat dotnet6Source GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in Ubuntu package updates : patch the affected Ubuntu packages soon.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 2.4% chance of exploitation in 30 days – higher than 84% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.0.127-8.0.27-0ubuntu1~22.04.1, 10.0.108-10.0.8-0ubuntu1~24.04.1, 8.0.127-8.0.27-0ubuntu1~24.04.1 +5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 12 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10dotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=stonkingOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 25.10dotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10dotnet8pkg:deb/ubuntu/dotnet8?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10dotnet9pkg:deb/ubuntu/dotnet9?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 10.0.108 and .NET Runtime 10.0.8.Security Fix(es): * dotnet: .NET: infinite loop allows an attacker to cause a denial of service (CVE-2026-42899) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.