Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.5 | High | 3.1 | 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 | CNA (microsoft) |
- CISA KEV Not listed.
- EPSS 0.019, the 79th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:22 UTC First seen by agentprime
- 31 Oct 2026, 15:22 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-6588-8gv4-xfgh
- OSV: GHSA-6588-8gv4-xfgh
- github.com/dotnet/runtime/security/advisories/GHSA-6588-8gv4-xfgh
- nvd.nist.gov/vuln/detail/CVE-2026-32203
- github.com/dotnet/runtime/issues/126891
- github.com/dotnet/announcements/issues/391
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32203.json
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203
- github.com/dotnet/runtime
- bugzilla.redhat.com/show_bug.cgi?id=2457740
- access.redhat.com/security/cve/CVE-2026-32203
- access.redhat.com/errata/RHSA-2026:9205
- access.redhat.com/errata/RHSA-2026:9080
- access.redhat.com/errata/RHSA-2026:9077