Buffer Overflow Vulnerability in Encrypt PDF 2.3 by VeryPDF
CVE-2019-25550

6.9MEDIUM

Key Information:

Vendor

VeryPDF

Status
Encrypt PDF
Vendor
CVE Published:
21 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25550?

Encrypt PDF 2.3 contains a vulnerability that enables local attackers to crash the application by entering excessively long strings in the password fields. Specifically, by inputting a 1000-byte buffer into either the User Password or Master Password fields in the application’s Settings dialog, attackers can trigger a denial of service when attempting to import PDF files. This flaw highlights the importance of proper input validation in securing applications against potential exploitation.

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Affected Version(s)

Encrypt PDF 2.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-25550 - Proof of Concept

References

https://www.exploit-db.com/exploits/46871
exploit
http://www.verypdf.com
product
https://www.vulncheck.com/advisories/encrypt-pdf-denial-o...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • đź‘ľ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alejandra Sánchez
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