CVE-2021-25159

MEDIUM

Aruba Instant <8.3.0.14-8.7.1.1 - RCE

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-25159.

AI-analyzed exploit summary This exploit targets CVE-2021-25159, a race condition in D-Link routers, to leak credentials, create directories, and achieve remote code execution (RCE) via a crafted PAPI message and command injection. It sets up a telnet backdoor for persistent access.

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: 8.6.0.7 and below; Aruba Instant 8.7.x: 8.7.1.1 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

Exploits (1)

exploitdb WORKING POC

pythonremotecgi

https://www.exploit-db.com/exploits/50136

View Code ZIP pw:eip

This exploit targets CVE-2021-25159, a race condition in D-Link routers, to leak credentials, create directories, 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

Complex

Reliability

Racy

Target: D-Link routers (specific models not listed)

No auth needed

Prerequisites: Network access to the target router · UDP port 8211 and HTTPS port 4343 accessible

MITRE ATT&CK

T1082 - System Information Discovery T1059 - Command and Scripting Interpreter T1078 - Valid Accounts T1190 - Exploit Public-Facing Application

devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (3)

Core 3

Core References

Vendor Advisory x_refsource_misc

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-007.txt

Patch, Third Party Advisory x_refsource_confirm

https://cert-portal.siemens.com/productcert/pdf/ssa-723417.pdf

Exploit, Third Party Advisory, VDB Entry x_refsource_misc

http://packetstormsecurity.com/files/163522/Aruba-Instant-IAP-Remote-Code-Execution.html

Scores

CVSS v3 6.5

EPSS 0.1348

EPSS Percentile 96.0%

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