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CVE-2023-44366: ZDI-CAN-21928: Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-16 · updated 2026-06-17
• Weakness: CWE-787

Description

Adobe Acrobat Reader versions 23.006.20360 (and earlier) and 20.005.30524 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products

• Adobe Acrobat for Edge: from 20.001.30005 through 20.005.30539
• Adobe Acrobat DC: from 15.008.20082 before 23.006.20380 — fixed in 23.006.20380
• Adobe Acrobat Reader: from 20.001.30005 before 20.005.30539 — fixed in 20.005.30539
• Adobe Acrobat Reader: from 15.008.20082 before 23.006.20380 — fixed in 23.006.20380

How to fix

Upgrade to a fixed version: Adobe Acrobat DC 23.006.20380; Adobe Acrobat Reader 20.005.30539; Adobe Acrobat Reader 23.006.20380. Check the vendor advisory for mitigations.

References

• https://helpx.adobe.com/security/products/acrobat/apsb23-54.htm
• https://helpx.adobe.com/security/products/acrobat/apsb23-54.htm

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