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CVE-2023-44323: PDF Jbig2 memory-corruption Vulnerability - MSFT T5

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-30 · updated 2026-06-17
• Weakness: CWE-416

Description

Adobe Acrobat for Edge version 118.0.2088.46 (and earlier) is affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service 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

• Microsoft Edge (Chromium): before 118.0.2088.76 — fixed in 118.0.2088.76
• Adobe Acrobat for Edge: through 118.0.2088.46

How to fix

Upgrade to a fixed version: Microsoft Edge (Chromium) 118.0.2088.76. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44323
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44323

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