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CVE-2026-62899VulnerabilityPublished Updated

Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update

Affects Red Hat .NET 10.0Source GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-62899· Medium 5.9

Not known to be exploited · CVSS 5.9 Medium · fixed in Red Hat package updates : update Red Hat microsoft.netcore.app when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (microsoft)CVSS 3.15.9
EPSS
0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.0.11, 8.0.30, 9.0.19 +2
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Aug 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
Microsoft.NET 10.0 runtimeAffected
  • >=10.0.0 <10.0.11
Fixed in
  • 10.0.11
Microsoft.NET 8.0 runtimeAffected
  • >=8.0.0 <8.0.30
Fixed in
  • 8.0.30
Microsoft.NET 9.0 runtimeAffected
  • >=9.0.0 <9.0.19
Fixed in
  • 9.0.19
MicrosoftMicrosoft Visual Studio 2022 version 17.14Affected
  • >=17.14.0 <17.14.38
Fixed in
  • 17.14.38
MicrosoftMicrosoft Visual Studio 2026 version 18.8Affected
  • >=18.0 <18.8.3
Fixed in
  • 18.8.3
NuGetmicrosoft.netcore.apppkg:nuget/microsoft.netcore.appOther threatsAffected
  • =10.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released an update to .NET 10.0 (SDK 10.0.111 and runtime 10.0.11) that addresses these vulnerabilities. Users should apply this update promptly to remediate the security issues. Detailed update instructions are available from Red Hat's official advisory and knowledge base articles. No additional mitigation steps are indicated beyond applying the official update.

Description

.NET 10.0 on Red Hat Enterprise Linux 8 has multiple security vulnerabilities including a security feature bypass, information disclosure, denial of service, and elevation of privilege. These issues are addressed in an update to SDK version 10.0.111 and runtime version 10.0.11. The update is rated as important by Red Hat Product Security. Users should apply the update to remediate these vulnerabilities.

References

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