CVE-2021-25155

MEDIUM

Aruba Instant <6.4.4.8-4.2.4.17 <6.5.4.18 <8.3.0.14 <8.5.0.11 - Remote Arbitrary File Modification

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2021-25155. PoCs published by Gr33nh4t.

AI-analyzed exploit summary This exploit leverages a race condition in Aruba Instant's PAPI protocol to leak credentials, then uses arbitrary file modification to achieve remote code execution by uploading and executing a malicious payload via a crafted HTTP request.

Description

A remote arbitrary file modification vulnerability was discovered in some Aruba Instant Access Point (IAP) products in version(s): Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below; Aruba Instant 6.5.x: 6.5.4.18 and below; Aruba Instant 8.3.x: 8.3.0.14 and below; Aruba Instant 8.5.x: 8.5.0.11 and below; Aruba Instant 8.6.x: 8.6.0.6 and below; Aruba Instant 8.7.x: 8.7.1.0 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

Exploits (2)

exploitdb WORKING POC
by Gr33nh4t · pythonremotehardware
https://www.exploit-db.com/exploits/50133

This exploit leverages a race condition in Aruba Instant's PAPI protocol to leak credentials, then uses arbitrary file modification to achieve remote code execution by uploading and executing a malicious payload via a crafted HTTP request.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Racy
Target: Aruba Instant (versions 6.4.x, 6.5.x, 8.3.x, 8.5.x, 8.6.x, 8.7.x)
No auth needed
Prerequisites: Network access to the target device · UDP port 8211 and HTTPS port 4343 accessible
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC
pythonremotecgi
https://www.exploit-db.com/exploits/50136

This exploit targets CVE-2021-25155, a race condition in D-Link routers, to leak credentials and achieve remote code execution (RCE) via a crafted PAPI message and command injection. It sets up a telnet backdoor for persistent access.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: D-Link routers (specific models not listed)
No auth needed
Prerequisites: Network access to the target router · UDP port 8211 accessible · HTTPS port 4343 accessible
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (4)

Core 4

Scores

CVSS v3 6.5
EPSS 0.1331
EPSS Percentile 95.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Details

Status published
Products (2)
arubanetworks/instant 6.4.0.0 - 6.4.4.8-4.2.4.18
siemens/scalance_w1750d_firmware 8.7.0 - 8.7.1.3
Published Mar 30, 2021
Tracked Since Feb 18, 2026