CVE-2021-27513

HIGH

EyesOfNetwork 5.3-10 - Authenticated Unrestricted Upload of Dangerous File Type

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2021-27513. PoCs published by ArianeBlow.

AI-analyzed exploit summary This PoC exploits CVE-2021-27513 and CVE-2021-27514 in EyesOfNetwork (versions 5.3-5.3.10) by brute-forcing session IDs to bypass authentication, then uploading a malicious PHP file to achieve remote code execution (RCE) via a reverse shell.

Description

The module admin_ITSM in EyesOfNetwork 5.3-10 allows remote authenticated users to upload arbitrary .xml.php files because it relies on "le filtre userside."

Exploits (2)

nomisec WORKING POC
by ArianeBlow · poc
https://github.com/ArianeBlow/CVE-2021-27513-CVE-2021-27514

This PoC exploits CVE-2021-27513 and CVE-2021-27514 in EyesOfNetwork (versions 5.3-5.3.10) by brute-forcing session IDs to bypass authentication, then uploading a malicious PHP file to achieve remote code execution (RCE) via a reverse shell.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: EyesOfNetwork 5.3-5.3.10
No auth needed
Prerequisites: Network access to the target · Valid session ID (brute-forced or known)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by ArianeBlow · poc
https://github.com/ArianeBlow/CVE-2021-27513

This exploit leverages an arbitrary file upload vulnerability in EyesOfNetwork 5.3-10 to achieve remote code execution (RCE) via a malicious PHP file. It authenticates, uploads a reverse shell payload, and triggers it to establish a connection back to the attacker.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: EyesOfNetwork 5.3-10
Auth required
Prerequisites: valid credentials for EyesOfNetwork · network access to the target · listener set up on attacker's machine
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 8.8
EPSS 0.2839
EPSS Percentile 97.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-434
Status published
Products (1)
eyesofnetwork/eyesofnetwork 5.3-10
Published Feb 22, 2021
Tracked Since Feb 18, 2026