CVE-2020-29238

HIGH

ExpressVPN Router < - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-29238. PoCs published by Jai Kumar Sharma.

AI-analyzed exploit summary The exploit demonstrates an integer overflow vulnerability in the Nginx range filter module used by ExpressVPN Router version 1.0, allowing sensitive information leakage via a crafted HTTP request with malformed Range headers.

Description

An integer buffer overflow in the Nginx webserver of ExpressVPN Router version 1 allows remote attackers to obtain sensitive information when the server running as reverse proxy via specially crafted request.

Exploits (1)

exploitdb WORKING POC
by Jai Kumar Sharma · textwebappsmultiple
https://www.exploit-db.com/exploits/49760

The exploit demonstrates an integer overflow vulnerability in the Nginx range filter module used by ExpressVPN Router version 1.0, allowing sensitive information leakage via a crafted HTTP request with malformed Range headers.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: ExpressVPN Router version 1.0 (Nginx 1.9.15)
No auth needed
Prerequisites: Access to the router's login panel (typically local network)
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.1665
EPSS Percentile 96.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-190
Status published
Products (1)
expressvpn/expressvpn 1.0
Published Mar 10, 2021
Tracked Since Feb 18, 2026