Detections
Analytics

Security Updates for Microsoft Office Products (July 2026) (macOS)

high Nessus Plugin ID 326952

Synopsis

The Microsoft Office product installed on the remote host is affected by multiple vulnerabilities

Description

The version of Microsoft Office for Mac installed on the remote host is affected by multiple vulnerabilities as referenced in the july-14-2026 advisory.

 - Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
 (CVE-2026-55045)

 - Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. (CVE-2026-55141, CVE-2026-55899)

 - Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
 (CVE-2026-47642, CVE-2026-54131, CVE-2026-55948)

 - Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. (CVE-2026-48580, CVE-2026-55138)

 - Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. (CVE-2026-50408, CVE-2026-54988, CVE-2026-55046, CVE-2026-55122, CVE-2026-55898)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update to Office for Mac version 16.111 or later.

See Also

http://www.nessus.org/u?37c7fe6c

Plugin Details

Severity: High

ID: 326952

File Name: macos_ms26_jul_office.nasl

Version: 1.1

Type: Local

Agent: macosx

Published: 7/15/2026

Updated: 7/15/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.06

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-55899

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-55045

Vulnerability Information

CPE: cpe:/a:microsoft:office

Required KB Items: Host/MacOSX/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-47642, CVE-2026-48580, CVE-2026-50314, CVE-2026-50387, CVE-2026-50408, CVE-2026-50467, CVE-2026-50665, CVE-2026-50675, CVE-2026-50678, CVE-2026-54131, CVE-2026-54988, CVE-2026-55018, CVE-2026-55022, CVE-2026-55023, CVE-2026-55024, CVE-2026-55025, CVE-2026-55026, CVE-2026-55027, CVE-2026-55028, CVE-2026-55029, CVE-2026-55031, CVE-2026-55033, CVE-2026-55035, CVE-2026-55036, CVE-2026-55037, CVE-2026-55038, CVE-2026-55039, CVE-2026-55041, CVE-2026-55042, CVE-2026-55043, CVE-2026-55044, CVE-2026-55045, CVE-2026-55046, CVE-2026-55047, CVE-2026-55048, CVE-2026-55049, CVE-2026-55050, CVE-2026-55053, CVE-2026-55054, CVE-2026-55055, CVE-2026-55056, CVE-2026-55057, CVE-2026-55058, CVE-2026-55120, CVE-2026-55121, CVE-2026-55122, CVE-2026-55123, CVE-2026-55124, CVE-2026-55125, CVE-2026-55127, CVE-2026-55128, CVE-2026-55129, CVE-2026-55130, CVE-2026-55131, CVE-2026-55132, CVE-2026-55133, CVE-2026-55134, CVE-2026-55136, CVE-2026-55137, CVE-2026-55138, CVE-2026-55139, CVE-2026-55140, CVE-2026-55141, CVE-2026-55142, CVE-2026-55898, CVE-2026-55899, CVE-2026-55947, CVE-2026-55948, CVE-2026-55949, CVE-2026-56156, CVE-2026-56192, CVE-2026-56193, CVE-2026-56195, CVE-2026-58618