CVE-2026-81993: acrobat Heap Overflow — Fix

Description

Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0019

Probability of exploitation

0.09%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
adobe	acrobat	24.001.20604 — 24.001.30429
adobe	acrobat_dc	15.008.20082 — 26.002.21901
adobe	acrobat_reader_dc	15.008.20082 — 26.002.21901
apple	macos	All
microsoft	windows	All

References

Advisories & Patches

https://helpx.adobe.com/security/products/acrobat/apsb26-141.html

Frequently Asked Questions

What is CVE-2026-81993? +

Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue requires user interaction in that a victim must open a malicious file. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-81993? +

CVE-2026-81993 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0019, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-81993? +

CVE-2026-81993 affects products from adobe, apple, microsoft, specifically: acrobat, acrobat_dc, acrobat_reader_dc, macos, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-81993? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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