CVE-2018-9843

CRITICAL

CyberArk Password Vault < 9.9.5 and 10.x < 10.1 - Remote Code Execution via REST API Authorization Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-9843. PoCs published by RedTeam Pentesting.

AI-analyzed exploit summary This exploit leverages insecure deserialization in CyberArk Password Vault Web Access by crafting a malicious .NET object to achieve unauthenticated remote code execution. The PoC uses ysoserial.net to generate a payload and demonstrates execution via an API call with a manipulated authorization header.

Description

The REST API in CyberArk Password Vault Web Access before 9.9.5 and 10.x before 10.1 allows remote attackers to execute arbitrary code via a serialized .NET object in an Authorization HTTP header.

Exploits (1)

exploitdb WORKING POC
by RedTeam Pentesting · textwebappsjson
https://www.exploit-db.com/exploits/44429

This exploit leverages insecure deserialization in CyberArk Password Vault Web Access by crafting a malicious .NET object to achieve unauthenticated remote code execution. The PoC uses ysoserial.net to generate a payload and demonstrates execution via an API call with a manipulated authorization header.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: CyberArk Password Vault Web Access < 9.9.5, < 9.10, 10.1
No auth needed
Prerequisites: Access to the target's REST API endpoint · Ability to send crafted HTTP requests
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2018/Apr/18
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040675
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44429/
Exploit, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/541932/100/0/threaded

Scores

CVSS v3 9.8
EPSS 0.1747
EPSS Percentile 96.7%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-502
Status published
Products (1)
cyberark/password_vault < 9.9.5
Published Apr 12, 2018
Tracked Since Feb 18, 2026