PT-2026-58127 · Microsoft · Cryptographic Services+1

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-44806

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Windows Cryptographic Services (affected versions not specified) Windows Schannel (affected versions not specified)

Description A memory leak occurs in Windows Cryptographic Services when memory is not released after its effective lifetime. This flaw allows an unauthorized attacker to cause a denial of service over a network, potentially knocking Windows Schannel offline.

Recommendations Apply the July 14 updates for Windows Schannel.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-44806

Affected Products

Cryptographic Services

Schannel

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-44806 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44806 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077219893162688911 · Twitter Post