CVE-2023-44365

Code execution via uninitialized embedded-font memory

Published Nov 16, 2023 · Updated Dec 16, 2025

Access of uninitialized pointer in Adobe Acrobat Reader allows remote attackers to execute code through a malicious PDF file. The embedded-font parser accesses memory through a pointer before the memory is properly initialized, enabling code execution in the Reader process. Affected releases are 23.006.20360 and earlier and 20.005.30524 and earlier on Windows and macOS, and exploitation requires a user to open the file.

CVSS severity7.8
High
EPSS probability2.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Access of uninitialized pointer in Adobe Acrobat Reader allows remote attackers to execute code through a malicious PDF file. The embedded-font parser accesses memory through a pointer before the memory is properly initialized, enabling code execution in the Reader process. Affected releases are 23.006.20360 and earlier and 20.005.30524 and earlier on Windows and macOS, and exploitation requires a user to open the file.

The record

CVE
CVE-2023-44365
Published
Nov 16, 2023
Updated
Dec 16, 2025
Vendor
Adobe
Product
Adobe Acrobat Reader
Classifications
CWE-824, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=23.006.20360

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Acrobat Readerversion=0 <=23.006.20360

Published CVSS scores

7.8AdobeCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo