CVE-2023-36565

Privilege escalation via graphics use-after-free

Published Oct 10, 2023 · Updated Apr 14, 2025

Use-after-free in Microsoft Office Graphics allows local users with low privileges to gain elevated privileges through crafted content. The graphics component accesses an object after its memory has been freed, but Microsoft has not disclosed the affected parser, object type, or triggering input structure. Exploitation requires local access, low privileges, and high-complexity conditions; success grants elevated execution with confidentiality, integrity, and availability impact.

CVSS severity7.0
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Microsoft Office Graphics allows local users with low privileges to gain elevated privileges through crafted content. The graphics component accesses an object after its memory has been freed, but Microsoft has not disclosed the affected parser, object type, or triggering input structure. Exploitation requires local access, low privileges, and high-complexity conditions; success grants elevated execution with confidentiality, integrity, and availability impact.

The record

CVE
CVE-2023-36565
Published
Oct 10, 2023
Updated
Apr 14, 2025
Vendor
Microsoft
Product
Microsoft Office LTSC for Mac 2021
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0.1 <16.78.23100802

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Office LTSC for Mac 2021version=16.0.1 <16.78.23100802
Microsoft · Microsoft Office for Androidversion=16.0.1 <16.0.16827.20138
Microsoft · Microsoft Office 2019 for Macversion=16.0.0 <16.78.23100802
Microsoft · Microsoft Office for Universalversion=16.0.1 <16.0.14326.21606

Published CVSS scores

7.0Microsoft CorporationCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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