CVE-2026-58280: dotnet8, dotnet10, dotnet11 vulnerabilities
Affects dotnet8Source GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in 8.0.132-8.0.32-0ubuntu1~22.04.1 : patch dotnet8 soon.
Data as of 30 Oct 2026, 06:59 UTC
Thin evidence
One scorer or none| CNA (microsoft) | CVSS 3.1 | 7.5 |
|---|
- EPSS
- 1.2% chance of exploitation in 30 days – higher than 69% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.0.132-8.0.32-0ubuntu1~22.04.1, 10.0.113-10.0.13-0ubuntu1~24.04.1, 8.0.132-8.0.32-0ubuntu1~24.04.1 +3
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 13 Oct 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 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10dotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=stonkingOther threats | Affected
| Fixed in
|
Ubuntu 26.10dotnet11pkg:deb/ubuntu/dotnet11?arch=source&distro=stonkingOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSdotnet8pkg:deb/ubuntu/dotnet8?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSdotnet8pkg:deb/ubuntu/dotnet8?arch=source&distro=jammyOther 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
Multiple security issues were discovered in .NET and this update includes new upstream .NET versions to fix these issues. .NET 8 has been updated to 8.0.32 in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. .NET 10 has been updated to 10.0.13 in Ubuntu 24.04 LTS, Ubuntu 26.04 LTS and Ubuntu 26.10. .NET 11 has been updated to 11.0.0~rc2 in Ubuntu 26.10. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.
References
- ubuntu.com/security/notices/USN-8942-1 (opens in a new tab)
- ubuntu.com/security/CVE-2026-58280 (opens in a new tab)
- ubuntu.com/security/CVE-2026-66822 (opens in a new tab)
- ubuntu.com/security/CVE-2026-69651 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70159 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70175 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70179 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70181 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70183 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70186 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70188 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70194 (opens in a new tab)
- ubuntu.com/security/CVE-2026-70196 (opens in a new tab)
- ubuntu.com/security/CVE-2026-84008 (opens in a new tab)
- ubuntu.com/security/CVE-2026-88092 (opens in a new tab)
- ubuntu.com/security/CVE-2026-92707 (opens in a new tab)
- ubuntu.com/security/CVE-2026-96222 (opens in a new tab)
- ubuntu.com/security/CVE-2026-96225 (opens in a new tab)
- ubuntu.com/security/CVE-2026-96230 (opens in a new tab)
- ubuntu.com/security/CVE-2026-96231 (opens in a new tab)