PT-2025-1247 · Microsoft · Windows Csc Service+1

Published 2025-01-14 · Updated 2025-01-17 · CVE-2025-21378

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows CSC Service (affected versions not specified)

Description The issue is related to a buffer overflow in dynamic memory, which can allow an attacker to elevate their privileges. This can affect the system, potentially leading to information disclosure. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

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

LPE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2025-00640

CVE-2025-21378

Affected Products

Windows

Windows Csc Service

References · 7

• https://osv.dev/vulnerability/CVE-2025-21378 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21378 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21378 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21378 · Security Note
• https://bdu.fstec.ru/vul/2025-00640 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21378 · Security Note
• https://t.me/cvedetector/15325 · Telegram Post