Local Buffer Overflow Vulnerability in R 3.4.4 by R Project
CVE-2019-25695

8.6HIGH

Key Information:

Vendor

R-project

Status
R
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25695?

R 3.4.4 is susceptible to a local buffer overflow vulnerability, which can be exploited by attackers to execute arbitrary code. By manipulating input in the GUI Preferences language field, an attacker can craft a payload that utilizes a 292-byte offset along with the JMP ESP instruction. This allows the execution of unintended commands, such as launching calc.exe. It highlights the need for users to ensure they are running updated versions to mitigate potential risks.

Affected Version(s)

R 3.4.4

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-2019-25695 - Proof of Concept

References

https://www.exploit-db.com/exploits/46265
exploit
https://cloud.r-project.org/bin/windows/
product
https://www.vulncheck.com/advisories/r-local-buffer-overf...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

Dino Covotsos - Telspace Systems
.