CVE-2026-54988

MediumCVSS 6.1/10Last modified Oct 14, 2026

Description

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jul 14, 2026
Last modified
Oct 14, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-549897.8Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.CVE-2026-549908.8Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.CVE-2026-549917.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorizedCVE-2026-549927.8Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.CVE-2026-549937.8Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code locally.CVE-2026-549959.8Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.CVE-2026-549967.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorizedCVE-2026-549975.5Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.CVE-2026-549988.8Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.CVE-2026-549998.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attackeCVE-2026-55005.9wolfSSL's wc_PKCS7_DecodeAuthEnvelopedData() does not properly sanitize the AES-GCM authentication tag length received and has no lower bounCVE-2026-550006.4Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.
CVE-2026-54988: Medium severity, CVSS 6.1 | Vulnix