CVE-2021-1499

MEDIUM NUCLEI

Cisco HyperFlex HX Data Platform unauthenticated file upload to RCE (CVE-2021-1499)

Title source: metasploit
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-1499. PoCs published by Nikita Abramov, Mikhail Klyuchnikov, wvu, jheysel-r7, including Metasploit module exploits/linux/http/cisco_hyperflex_file_upload_rce. A Nuclei detection template is also available.

AI-analyzed exploit summary This Metasploit module exploits an unauthenticated file upload vulnerability in Cisco HyperFlex HX Data Platform (CVE-2021-1499) to achieve remote code execution as the Tomcat user. It uploads a malicious WAR file via the /upload endpoint and executes it.

Description

A vulnerability in the web-based management interface of Cisco HyperFlex HX Data Platform could allow an unauthenticated, remote attacker to upload files to an affected device. This vulnerability is due to missing authentication for the upload function. An attacker could exploit this vulnerability by sending a specific HTTP request to an affected device. A successful exploit could allow the attacker to upload files to the affected device with the permissions of the tomcat8 user.

Exploits (1)

metasploit WORKING POC EXCELLENT
by Nikita Abramov, Mikhail Klyuchnikov, wvu, jheysel-r7 · rubypocjava
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/cisco_hyperflex_file_upload_rce.rb

This Metasploit module exploits an unauthenticated file upload vulnerability in Cisco HyperFlex HX Data Platform (CVE-2021-1499) to achieve remote code execution as the Tomcat user. It uploads a malicious WAR file via the /upload endpoint and executes it.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Cisco HyperFlex HX Data Platform (versions up to 4.5(2a))
No auth needed
Prerequisites: Network access to the target's HTTP/HTTPS service · Vulnerable Cisco HyperFlex HX Data Platform instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Cisco HyperFlex HX Data Platform - Arbitrary File Upload
MEDIUMby gy741

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.8043
EPSS Percentile 99.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-306
Status published
Products (1)
cisco/hyperflex_hx_data_platform < 4.0\(2e\)
Published May 06, 2021
Tracked Since Feb 18, 2026