PT-2025-20987 · Microsoft · Office Excel

Zhiniang Peng · Published 2025-05-13 · Updated 2025-05-19 · CVE-2025-30376

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 Office Excel (affected versions not specified)

Description A heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. This issue enables remote attackers to execute arbitrary code and affect the system. The vulnerability is related to a buffer overflow in memory, which can be exploited to execute arbitrary code.

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

RCE

Memory Corruption

Out of bounds Read

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-125

CWE-122

Related Identifiers

BDU:2025-05596

CVE-2025-30376

Affected Products

Office Excel

References · 9

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30376 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-30376 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-05596 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-30376 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30376 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/721001 · Security Note
• https://twitter.com/dailycve/status/1924475241985613982 · Twitter Post
• https://t.me/cvenotify/122902 · Telegram Post
• https://twitter.com/CVEnew/status/1922339832438915225 · Twitter Post