Path Traversal Vulnerability in Reader Tools PDF Reader App for Android
CVE-2026-84852

4.8MEDIUM

Key Information:

Vendor

Reader Tools

Status
PDF Reader App
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-84852?

A vulnerability has been uncovered in the Reader Tools PDF Reader App version 98.8 for Android that allows local attackers to exploit the function ActSplashNew.handleDeeplink. By manipulating the argument _display_name, attackers can execute a path traversal attack, potentially allowing unauthorized access to sensitive files on the device. This exploit has already been publicly disclosed and poses a serious risk to users who have not updated their applications. Despite early notification, there has been no response from the vendor addressing this security issue.

Affected Version(s)

PDF Reader App 98.8

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-2026-84852 - Proof of Concept

References

https://vuldb.com/vuln/398130
vdb-entrytechnical-description
https://vuldb.com/vuln/398130/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-84852
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Actuator (VulDB User)
VulDB CNA Team
.