CVE-2020-29238 EXPLOIT
7.5
HIGH · CVSS 3.1 · EPSS 16.5% (pctl 97)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 7.5 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 16.48% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-190 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-03-10 |
| Last modified | 2026-07-09 |
Affected (1)
| Vendor | Product |
|---|---|
| expressvpn | expressvpn |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | ExpressVPN VPN Router 1.0 - Router Login Panel's Integer Overflow | 2021-04-13 |
References
- http://ja1sharma.com/blog/2021/CVE-2020-29238/
- http://packetstormsecurity.com/files/162152/ExpressVPN-VPN-Router-1.0-Integer-Overflow.html
- https://bugcrowd.com/disclosures/4e8d5325-8e49-4ea3-962a-a088bbb73a3f/expressvpn-router-integer-buffer-overflow-server-info-disclosure-when-router-s-nginx-server-used-as-reverse-proxy-server
- http://ja1sharma.com/blog/2021/CVE-2020-29238/
- http://packetstormsecurity.com/files/162152/ExpressVPN-VPN-Router-1.0-Integer-Overflow.html
- https://bugcrowd.com/disclosures/4e8d5325-8e49-4ea3-962a-a088bbb73a3f/expressvpn-router-integer-buffer-overflow-server-info-disclosure-when-router-s-nginx-server-used-as-reverse-proxy-server
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