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VulnerabilityPublished Updated

CVE-2026-58280: dotnet8, dotnet10, dotnet11 vulnerabilities

Affects dotnet8Source GCVE Database

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Authoritative record:CVE-2026-58280· High 7.5

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

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (microsoft)CVSS 3.17.5
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:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Oct 2026

  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 29 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 26.10dotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=stonkingOther threatsAffected
  • <10.0.113-10.0.13-0ubuntu1~26.10.1
Fixed in
  • 10.0.113-10.0.13-0ubuntu1~26.10.1
Ubuntu 26.10dotnet11pkg:deb/ubuntu/dotnet11?arch=source&distro=stonkingOther threatsAffected
  • <11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
Fixed in
  • 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
Ubuntu 26.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=resoluteOther threatsAffected
  • <10.0.113-10.0.13-0ubuntu1~26.04.1
Fixed in
  • 10.0.113-10.0.13-0ubuntu1~26.04.1
Ubuntu 24.04 LTSdotnet10pkg:deb/ubuntu/dotnet10?arch=source&distro=nobleOther threatsAffected
  • <10.0.113-10.0.13-0ubuntu1~24.04.1
Fixed in
  • 10.0.113-10.0.13-0ubuntu1~24.04.1
Ubuntu 24.04 LTSdotnet8pkg:deb/ubuntu/dotnet8?arch=source&distro=nobleOther threatsAffected
  • <8.0.132-8.0.32-0ubuntu1~24.04.1
Fixed in
  • 8.0.132-8.0.32-0ubuntu1~24.04.1
Ubuntu 22.04 LTSdotnet8pkg:deb/ubuntu/dotnet8?arch=source&distro=jammyOther threatsAffected
  • <8.0.132-8.0.32-0ubuntu1~22.04.1
Fixed in
  • 8.0.132-8.0.32-0ubuntu1~22.04.1

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

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