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CVE-2026-48373: Acrobat Reader | Heap-based Buffer Overflow (CWE-122)

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-17 · updated 2026-10-24
• Weakness: CWE-122

Description

Acrobat Reader is affected by a Heap-based Buffer Overflow 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: before 24.001.30383 — fixed in 24.001.30383
• Adobe Acrobat DC: from 15.008.20082 before 26.001.21662 — fixed in 26.001.21662
• Adobe Acrobat Reader: from 15.008.20082 before 26.001.21662 — fixed in 26.001.21662

How to fix

Upgrade to a fixed version: Adobe Acrobat for Edge 24.001.30383; Adobe Acrobat DC 26.001.21662; Adobe Acrobat Reader 26.001.21662. Check the vendor advisory for mitigations.

References

• https://helpx.adobe.com/security/products/acrobat/apsb26-63.html

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