Detections
Analytics

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

medium Nessus Plugin ID 334691

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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 august-11-2026 advisory.

 - Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
 (CVE-2026-70311)

 - Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. (CVE-2026-65807)

 - Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
 (CVE-2026-68793, CVE-2026-68814)

 - Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. (CVE-2026-68794, CVE-2026-68796, CVE-2026-68798, CVE-2026-68800, CVE-2026-68801, CVE-2026-68805, CVE-2026-68807, CVE-2026-68812, CVE-2026-68815)

 - Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. (CVE-2026-68795, CVE-2026-68816, CVE-2026-68817)

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 16.112 or later.

See Also

http://www.nessus.org/u?b7c4e2c5

Plugin Details

Severity: Medium

ID: 334691

File Name: macos_ms26_aug_office.nasl

Version: 1.3

Type: Local

Agent: macosx

Published: 8/12/2026

Updated: 8/17/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.78

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2026-63524

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

CVSS Score Source: CVE-2026-70325

Vulnerability Information

CPE: cpe:/a:microsoft:office

Required KB Items: Host/MacOSX/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/11/2026

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-58651, CVE-2026-62804, CVE-2026-62842, CVE-2026-63513, CVE-2026-63515, CVE-2026-63517, CVE-2026-63518, CVE-2026-63519, CVE-2026-63524, CVE-2026-63526, CVE-2026-63527, CVE-2026-63528, CVE-2026-63530, CVE-2026-63531, CVE-2026-63532, CVE-2026-63533, CVE-2026-64898, CVE-2026-64899, CVE-2026-64903, CVE-2026-64904, CVE-2026-64905, CVE-2026-64907, CVE-2026-64909, CVE-2026-64910, CVE-2026-64911, CVE-2026-64915, CVE-2026-64917, CVE-2026-65657, CVE-2026-65661, CVE-2026-65664, CVE-2026-65807, CVE-2026-66807, CVE-2026-66809, CVE-2026-66810, CVE-2026-68793, CVE-2026-68794, CVE-2026-68795, CVE-2026-68796, CVE-2026-68797, CVE-2026-68798, CVE-2026-68799, CVE-2026-68800, CVE-2026-68801, CVE-2026-68802, CVE-2026-68803, CVE-2026-68804, CVE-2026-68805, CVE-2026-68806, CVE-2026-68807, CVE-2026-68808, CVE-2026-68809, CVE-2026-68810, CVE-2026-68811, CVE-2026-68812, CVE-2026-68813, CVE-2026-68814, CVE-2026-68815, CVE-2026-68816, CVE-2026-68817, CVE-2026-68818, CVE-2026-70310, CVE-2026-70311, CVE-2026-70312, CVE-2026-70313, CVE-2026-70314, CVE-2026-70315, CVE-2026-70316, CVE-2026-70317, CVE-2026-70318, CVE-2026-70319, CVE-2026-70320, CVE-2026-70322, CVE-2026-70323, CVE-2026-70325, CVE-2026-70327, CVE-2026-70328

IAVA: 2026-A-0833, 2026-A-0835, 2026-A-0837, 2026-A-0840, 2026-A-0843