PT-2026-58335 · Microsoft · Windows Data Dll

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-50347

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Data dll (affected versions not specified)

Description A heap-based buffer overflow occurs in the Windows Data dll, which could allow an unauthorized attacker to execute arbitrary code locally or remotely, potentially affecting the entire system. A heap-based buffer overflow is a memory corruption issue that happens when a program writes more data to a heap-allocated memory block than it can hold.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Heap Based Buffer Overflow

Integer Overflow

Weakness Enumeration

CWE-122

CWE-190

Related Identifiers

CVE-2026-50347

Affected Products

Windows Data Dll

References · 4

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50347 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50347 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50347 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50347 · Security Note