PT-2025-20996 · Microsoft · Office

Li Shuang + 1 · CVE-2025-30386 · Published 2025-05-13 · Updated 2026-05-22

Positive Technologies (AI Summary)

CVSS v3.1

8.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Microsoft Office (affected versions not specified)

Description: The issue is related to a use-after-free condition in Microsoft Office, allowing an unauthorized attacker to execute code locally. This can potentially enable remote attackers to execute arbitrary code and affect the system. No user interaction is needed beyond previewing the MS Office Preview Pane for remote code execution.

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:2025-05440

CVE-2025-30386

Affected Products

Office

References · 13

• https://osv.dev/vulnerability/CVE-2025-30386 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30386 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/720989 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30386 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-30386 · Security Note
• https://bdu.fstec.ru/vul/2025-05440 · Security Note
• https://t.me/kasperskyb2b/1734 · Note
• https://twitter.com/CVEnew/status/1922339825195352559 · Twitter Post
• https://twitter.com/syedaquib77/status/1922475586133631332 · Twitter Post
• https://t.me/cveNotify/164586 · Telegram Post
• https://t.me/avleonovcom/1535 · Telegram Post
• https://t.me/aptreports/20196 · Telegram Post
• https://twitter.com/ZeroPathLabs/status/1922468993224311206 · Twitter Post