CVE-2026-58649 PUBLISHED

.NET Information Disclosure Vulnerability

Assigner: microsoft
Reserved: 01.07.2026 Published: 08.09.2026 Updated: 08.09.2026

Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CVSS Score: 6.5

Product Status

Vendor Microsoft
Product .NET 10.0
Versions
  • affected from 10.0.0 to 10.0.111, 10.0.400 (excl.)
Vendor Microsoft
Product .NET 11.0
Versions
  • affected from 11.0.0 to 11.0 RC1 (excl.)
Vendor Microsoft
Product .NET 8.0
Versions
  • affected from 8.0.0 to 8.0.130, 8.0.424 (excl.)
Vendor Microsoft
Product .NET 9.0
Versions
  • affected from 9.0.0 to 9.0.120, 9.0.317 (excl.)
Vendor Microsoft
Product Microsoft Visual Studio 2022 version 17.14
Versions
  • affected from 17.14.0 to 17.14.40 (excl.)
Vendor Microsoft
Product Microsoft Visual Studio 2026 version 18.9
Versions
  • affected from 18.9.0 to 18.9.3 (excl.)

References

Problem Types