CVE-2020-23591

CRITICAL

OPTILINK OP-XT71000N V2.2 - File Upload

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-23591. PoCs published by huzaifahussain98.

AI-analyzed exploit summary The repository describes an arbitrary file upload vulnerability in OPTILINK OP-XT71000N devices, allowing attackers to upload malicious files via '/mgm_dev_upgrade.asp' for DoS, reverse shells, or privilege escalation. No exploit code is provided, only a detailed writeup.

Description

A vulnerability in OPTILINK OP-XT71000N Hardware Version: V2.2 , Firmware Version: OP_V3.3.1-191028 allows an attacker to upload arbitrary files through " /mgm_dev_upgrade.asp " which can "delete every file for Denial of Service (using 'rm -rf *.*' in the code), reverse connection (using '.asp' webshell), backdoor.

Exploits (1)

nomisec WRITEUP
by huzaifahussain98 · poc
https://github.com/huzaifahussain98/CVE-2020-23591

The repository describes an arbitrary file upload vulnerability in OPTILINK OP-XT71000N devices, allowing attackers to upload malicious files via '/mgm_dev_upgrade.asp' for DoS, reverse shells, or privilege escalation. No exploit code is provided, only a detailed writeup.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Theoretical
Target: OPTILINK OP-XT71000N Hardware Version: V2.2, Firmware Version: OP_V3.3.1-191028
No auth needed
Prerequisites: Network access to the target device · Vulnerable firmware version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0106
EPSS Percentile 60.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-434
Status published
Products (1)
optilinknetwork/op-xt71000n_firmware 3.3.1-191028
Published Nov 23, 2022
Tracked Since Feb 18, 2026