Detections
Analytics

Security Updates for Microsoft PowerPoint Products C2R (October 2026)

critical Nessus Plugin ID 365624

Synopsis

The Microsoft PowerPoint Products are affected by multiple vulnerabilities.

Description

The Microsoft PowerPoint Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

 - Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. (CVE-2026-70215, CVE-2026-88178)

 - Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. (CVE-2026-88207)

 - Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally. (CVE-2026-88210)

 - Untrusted pointer dereference in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network. (CVE-2026-88203)

 - Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally. (CVE-2026-97005, CVE-2026-97744)

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

Solution

Microsoft has released patches to address these issues.

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic updates are enabled or open any office app and manually perform an update.

See Also

http://www.nessus.org/u?5931548c

Plugin Details

Severity: Critical

ID: 365624

File Name: smb_nt_ms26_oct_powerpoint_c2r.nasl

Version: 1.2

Type: Local

Agent: windows

Family: Windows

Published: 10/14/2026

Updated: 10/15/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.5

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-88178

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/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

Vulnerability Information

CPE: cpe:/a:microsoft:powerpoint

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 10/13/2026

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-70215, CVE-2026-88178, CVE-2026-88203, CVE-2026-88207, CVE-2026-88210, CVE-2026-97005, CVE-2026-97744