CVE-2025-55311: pdf editor Signature Bypass — Fix

Description

An issue was discovered in Foxit PDF and Editor for Windows and macOS before 13.2 and 2025 before 2025.2. A crafted PDF can use JavaScript to alter annotation content and subsequently clear the file's modification status via JavaScript interfaces. This circumvents digital signature verification by hiding document modifications, allowing an attacker to mislead users about the document's integrity and compromise the trustworthiness of signed PDFs.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-347 CWE-347

Affected Products

Vendor	Product	Versions
foxit	pdf_editor	< 13.1.7.63027
foxit	pdf_editor	2023.1.0.55583 — 2023.3.0.63083
foxit	pdf_editor	2024.1.0.63682 — 2024.4.1.66479
foxit	pdf_editor	All
foxit	pdf_reader	< 2025.1.0.66692
apple	macos	All
foxit	pdf_editor	< 13.1.7.23637
foxit	pdf_editor	2023.1.0.15510 — 2023.3.0.23028
foxit	pdf_editor	2024.1.0.23997 — 2024.4.1.27687
foxit	pdf_editor	All
foxit	pdf_reader	< 2025.1.0.27937
microsoft	windows	All

References

Advisories & Patches

https://www.foxit.com/support/security-bulletins.html

Frequently Asked Questions

What is CVE-2025-55311? +

An issue was discovered in Foxit PDF and Editor for Windows and macOS before 13.2 and 2025 before 2025.2. A crafted PDF can use JavaScript to alter annotation content and subsequently clear the file's modification status via JavaScript interfaces. This circumvents digital signature verification by hiding document modifications, allowing an attacker to mislead users about the document's integrity and compromise the trustworthiness of signed PDFs. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-55311? +

CVE-2025-55311 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-55311? +

CVE-2025-55311 affects products from apple, foxit, microsoft, specifically: macos, pdf_editor, pdf_reader, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55311? +

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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