Skip to content
Fencer Vulns
high 7.8

CVE-2026-58641 json

.NET Elevation of Privilege Vulnerability

published 2026-08-11 2 mo ago modified 2026-10-30 9 d ago also BIT-dotnet-2026-58641 , BIT-dotnet-sdk-2026-58641 , EUVD-2026-56606

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.

Patch / fix

  • bitnami dotnet 8.0.30, 9.0.19, 10.0.11
  • bitnami dotnet-sdk 8.0.30, 9.0.19, 10.0.11
  • microsoft .net 8.0.30, 9.0.19, 10.0.11

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-58641 updated cvss 7.8

dotnet: .NET: Elevation of Privilege via integer overflow or wraparound

  • Red Hat Enterprise Linux 8 dotnet, dotnet8.0, dotnet9.0, dotnet/sdk, dotnet10.0, dotnet-host, +39 more Red Hat Enterprise Linux 9 dotnet6.0, dotnet7.0, dotnet8.0, dotnet9.0, dotnet/sdk, dotnet10.0, +59 more Red Hat Enterprise Linux 10 dotnet8.0, dotnet9.0, dotnet10.0, dotnet11.0 Red Hat Hardened Images dotnet8.0, dotnet9.0, dotnet10.0 Red Hat OpenShift Dev Spaces devspaces/udi-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami dotnet
>=8.0.0, <8.0.30
>=9.0.0, <9.0.19
>=10.0.0, <10.0.11
8.0.30
9.0.19
10.0.11
bitnami dotnet-sdk
>=8.0.0, <8.0.30
>=9.0.0, <9.0.19
>=10.0.0, <10.0.11
8.0.30
9.0.19
10.0.11

Affected products

  • Microsoft SkiaSharp

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.