PT-2021-6308 · Microsoft · Office Word

Kdot · Published 2021-07-09 · Updated 2023-12-28 · CVE-2021-38656

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 Microsoft Word (affected versions not specified)

Description The issue is related to a use-after-free condition in Microsoft Word, specifically with the handling of memory after it has been freed. This can be exploited by an attacker using a specially crafted malicious file, potentially allowing the execution of arbitrary code.

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

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2022-01293

CVE-2021-38656

ZDI-21-1082

Affected Products

Office Word

References · 9

• https://zerodayinitiative.com/advisories/ZDI-21-1082 · Security Note
• https://bdu.fstec.ru/vul/2022-01293 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-38656 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38656 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38656 · Vendor Advisory
• https://t.me/cibsecurity/28875 · Telegram Post
• https://t.me/cvenotify/20957 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021091442 · Note
• https://t.me/cvenotify/21421 · Telegram Post