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Description

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.

PUBLISHED Reserved 2026-02-11 | Published 2026-04-14 | Updated 2026-06-01 | Assigner microsoft




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Problem types

CWE-400: Uncontrolled Resource Consumption

CWE-611: Improper Restriction of XML External Entity Reference

Product status

10.0.0 (custom) before 10.0.6
affected

8.0.0 (custom) before 8.0.26
affected

9.0.0 (custom) before 9.0.15
affected

7.5.0 (custom) before 7.5.6
affected

7.6.0 (custom) before 7.6.1
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26171 (.NET Denial of Service Vulnerability) vendor-advisory patch

cve.org (CVE-2026-26171)

nvd.nist.gov (CVE-2026-26171)

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