CVE-2021-25161

MEDIUM NUCLEI

Aruba Instant - Cross-Site Scripting

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-25161. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit leverages a race condition in the PAPI protocol to leak credentials, then uses command injection to achieve remote code execution on D-Link routers. It downloads and executes a BusyBox binary to spawn a telnet shell on port 22222.

Description

A remote cross-site scripting (xss) 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

This exploit leverages a race condition in the PAPI protocol to leak credentials, then uses command injection to achieve remote code execution on D-Link routers. It downloads and executes a BusyBox binary to spawn a telnet shell on port 22222.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Racy
Target: D-Link routers (specific model/version not specified in code)
No auth needed
Prerequisites: Network access to UDP port 8211 and HTTPS port 4343 on the target router
devstral-2 · analyzed Feb 19, 2026 Full analysis →

Nuclei Templates (1)

Aruba Instant Access Point (IAP) - Cross-Site Scripting
MEDIUMVERIFIEDby ritikchaddha
Shodan: title:"Aruba"
FOFA: body="jscripts/third_party/raphael-treemap.min.js" || body="jscripts/third_party/highcharts.src.js"

References (3)

Core 3
Core References
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 6.1
EPSS 0.1644
EPSS Percentile 96.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
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