The SentinelOne Annual Threat Report - A Defenders Guide from the FrontlinesThe SentinelOne Annual Threat ReportGet the Report
Experiencing a Breach?Blog
Get StartedContact Us
SentinelOne
  • Platform
    Platform Overview
    • Singularity Platform
      Welcome to Integrated Enterprise Security
    • AI for Security
      Leading the Way in AI-Powered Security Solutions
    • Securing AI
      Accelerate AI Adoption with Secure AI Tools, Apps, and Agents.
    • How It Works
      The Singularity XDR Difference
    • Singularity Marketplace
      One-Click Integrations to Unlock the Power of XDR
    • Pricing & Packaging
      Comparisons and Guidance at a Glance
    Data & AI
    • Purple AI
      Accelerate SecOps with Generative AI
    • Singularity Hyperautomation
      Easily Automate Security Processes
    • AI-SIEM
      The AI SIEM for the Autonomous SOC
    • Singularity Data Lake
      AI-Powered, Unified Data Lake
    • Singularity Data Lake for Log Analytics
      Seamlessly Ingest Data from On-Prem, Cloud or Hybrid Environments
    Endpoint Security
    • Singularity Endpoint
      Autonomous Prevention, Detection, and Response
    • Singularity XDR
      Native & Open Protection, Detection, and Response
    • Singularity RemoteOps Forensics
      Orchestrate Forensics at Scale
    • Singularity Threat Intelligence
      Comprehensive Adversary Intelligence
    • Singularity Vulnerability Management
      Application & OS Vulnerability Management
    • Singularity Identity
      Identity Threat Detection and Response
    Cloud Security
    • Singularity Cloud Security
      Block Attacks with an AI-Powered CNAPP
    • Singularity Cloud Native Security
      Secure Cloud and Development Resources
    • Singularity Cloud Workload Security
      Real-Time Cloud Workload Protection Platform
    • Singularity Cloud Data Security
      AI-Powered Threat Detection for Cloud Storage
    • Singularity Cloud Security Posture Management
      Detect and Remediate Cloud Misconfigurations
    Securing AI
    • Prompt Security
      Secure AI Tools Across Your Enterprise
  • Why SentinelOne?
    Why SentinelOne?
    • Why SentinelOne?
      Cybersecurity Built for What’s Next
    • Our Customers
      Trusted by the World’s Leading Enterprises
    • Industry Recognition
      Tested and Proven by the Experts
    • About Us
      The Industry Leader in Autonomous Cybersecurity
    Compare SentinelOne
    • Arctic Wolf
    • Broadcom
    • CrowdStrike
    • Cybereason
    • Microsoft
    • Palo Alto Networks
    • Sophos
    • Splunk
    • Trellix
    • Trend Micro
    • Wiz
    Verticals
    • Energy
    • Federal Government
    • Finance
    • Healthcare
    • Higher Education
    • K-12 Education
    • Manufacturing
    • Retail
    • State and Local Government
  • Services
    Managed Services
    • Managed Services Overview
      Wayfinder Threat Detection & Response
    • Threat Hunting
      World-Class Expertise and Threat Intelligence
    • Managed Detection & Response
      24/7/365 Expert MDR Across Your Entire Environment
    • Incident Readiness & Response
      DFIR, Breach Readiness, & Compromise Assessments
    Support, Deployment, & Health
    • Technical Account Management
      Customer Success with Personalized Service
    • SentinelOne GO
      Guided Onboarding & Deployment Advisory
    • SentinelOne University
      Live and On-Demand Training
    • Services Overview
      Comprehensive Solutions for Seamless Security Operations
    • SentinelOne Community
      Community Login
  • Partners
    Our Network
    • MSSP Partners
      Succeed Faster with SentinelOne
    • Singularity Marketplace
      Extend the Power of S1 Technology
    • Cyber Risk Partners
      Enlist Pro Response and Advisory Teams
    • Technology Alliances
      Integrated, Enterprise-Scale Solutions
    • SentinelOne for AWS
      Hosted in AWS Regions Around the World
    • Channel Partners
      Deliver the Right Solutions, Together
    • SentinelOne for Google Cloud
      Unified, Autonomous Security Giving Defenders the Advantage at Global Scale
    • Partner Locator
      Your Go-to Source for Our Top Partners in Your Region
    Partner Portal→
  • Resources
    Resource Center
    • Case Studies
    • Data Sheets
    • eBooks
    • Reports
    • Videos
    • Webinars
    • Whitepapers
    • Events
    View All Resources→
    Blog
    • Feature Spotlight
    • For CISO/CIO
    • From the Front Lines
    • Identity
    • Cloud
    • macOS
    • SentinelOne Blog
    Blog→
    Tech Resources
    • SentinelLABS
    • Ransomware Anthology
    • Cybersecurity 101
  • About
    About SentinelOne
    • About SentinelOne
      The Industry Leader in Cybersecurity
    • Investor Relations
      Financial Information & Events
    • SentinelLABS
      Threat Research for the Modern Threat Hunter
    • Careers
      The Latest Job Opportunities
    • Press & News
      Company Announcements
    • Cybersecurity Blog
      The Latest Cybersecurity Threats, News, & More
    • FAQ
      Get Answers to Our Most Frequently Asked Questions
    • DataSet
      The Live Data Platform
    • S Foundation
      Securing a Safer Future for All
    • S Ventures
      Investing in the Next Generation of Security, Data and AI
  • Pricing
Get StartedContact Us
CVE Vulnerability Database
Vulnerability Database/CVE-2025-55275

CVE-2025-55275: HCLTech Aftermarket Cloud Auth Bypass

CVE-2025-55275 is an authentication bypass vulnerability in HCLTech Aftermarket Cloud that allows attackers to hijack admin sessions through concurrent session exploitation. This article covers technical details, impact, and mitigation.

Published: March 27, 2026

CVE-2025-55275 Overview

HCL Aftermarket DPC is affected by an Admin Session Concurrency vulnerability that enables attackers to exploit concurrent sessions to hijack or impersonate an admin user. This session management flaw allows unauthorized access to administrative functions by abusing the way the application handles multiple simultaneous admin sessions.

Critical Impact

Attackers can exploit concurrent session handling to hijack or impersonate administrative users, potentially gaining full control over the application and its data.

Affected Products

  • HCL Aftermarket Cloud version 1.0.0
  • HCL Aftermarket DPC

Discovery Timeline

  • 2026-03-26 - CVE-2025-55275 published to NVD
  • 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2025-55275

Vulnerability Analysis

This vulnerability is classified under CWE-557 (Concurrency Issues), which relates to improper handling of concurrent operations. The HCL Aftermarket DPC application fails to properly manage administrative session states when multiple sessions are active simultaneously. This creates a race condition where an attacker can intercept or duplicate session tokens during the window when concurrent admin sessions exist.

The attack requires network access and some user interaction, but does not require prior authentication. Successful exploitation can result in high impact to both confidentiality and integrity, as the attacker can read sensitive administrative data and make unauthorized changes to the system.

Root Cause

The root cause stems from inadequate session isolation and concurrency controls in the administrative authentication mechanism. The application does not properly invalidate or isolate session tokens when multiple admin sessions are created, allowing session state to be shared or hijacked between concurrent connections.

Attack Vector

The attack is network-based and targets the session management infrastructure of the HCL Aftermarket DPC platform. An attacker monitors for administrative login activity and exploits the window when concurrent sessions are established. By timing their attack during active admin sessions, they can capture or forge session credentials to impersonate legitimate administrators.

The vulnerability can be exploited without direct authentication to the system, though it requires some form of user interaction such as tricking an administrator into accessing a crafted resource or exploiting timing during legitimate admin activity.

Detection Methods for CVE-2025-55275

Indicators of Compromise

  • Multiple simultaneous administrative sessions originating from different IP addresses or user agents
  • Unusual patterns of administrative session creation and activity
  • Session tokens being used from multiple network locations concurrently
  • Authentication logs showing overlapping admin login events with anomalous timing

Detection Strategies

  • Implement monitoring for concurrent administrative session anomalies in authentication logs
  • Deploy behavioral analysis to detect session hijacking patterns such as rapid geographic changes
  • Configure alerts for multiple active admin sessions from different source IPs
  • Review access logs for administrative actions that occur in rapid succession from different contexts

Monitoring Recommendations

  • Enable detailed session logging including IP addresses, user agents, and timestamps
  • Monitor for session token reuse across different network endpoints
  • Implement real-time alerting on concurrent admin session thresholds
  • Regularly audit administrative session patterns for anomalous behavior

How to Mitigate CVE-2025-55275

Immediate Actions Required

  • Review the HCL Software Knowledge Base Article for vendor-specific guidance
  • Limit administrative sessions to single concurrent instances where possible
  • Implement additional authentication factors for administrative access
  • Restrict administrative access to trusted network segments or VPN connections

Patch Information

HCL has published a security advisory for this vulnerability. Administrators should consult the official HCL Knowledge Base article (KB0129793) for the latest patch information and remediation guidance. Apply vendor-provided updates as soon as they become available.

Workarounds

  • Enforce single-session policies for administrative accounts to prevent concurrent logins
  • Implement IP binding for admin sessions to restrict session validity to the originating IP address
  • Deploy web application firewall rules to detect and block suspicious session patterns
  • Enable session timeout policies with shorter durations for administrative users
  • Consider implementing step-up authentication for sensitive administrative operations
bash
# Example: Configure session restrictions (consult vendor documentation for specific settings)
# Limit concurrent admin sessions
MAX_ADMIN_SESSIONS=1
SESSION_TIMEOUT_MINUTES=15
BIND_SESSION_TO_IP=true

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

  • Vulnerability Details
  • TypeAuth Bypass

  • Vendor/TechHcltech Aftermarket Cloud

  • SeverityHIGH

  • CVSS Score8.1

  • Known ExploitedNo
  • CVSS Vector
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
  • Impact Assessment
  • ConfidentialityLow
  • IntegrityHigh
  • AvailabilityNone
  • CWE References
  • CWE-557
  • Vendor Resources
  • HCL Software Knowledge Base Article
  • Related CVEs
  • CVE-2025-55266: HCLTech Aftermarket Cloud Auth Bypass Flaw

  • CVE-2025-55269: Hcltech Aftermarket Cloud Auth Bypass

  • CVE-2025-55264: Hcltech Aftermarket Cloud Auth Bypass

  • CVE-2025-55267: Hcltech Aftermarket Cloud RCE Vulnerability
Experience the World’s Most Advanced Cybersecurity Platform

Experience the World’s Most Advanced Cybersecurity Platform

See how our intelligent, autonomous cybersecurity platform can protect your organization now and into the future.

Try SentinelOne
  • Get Started
  • Get a Demo
  • Product Tour
  • Why SentinelOne
  • Pricing & Packaging
  • FAQ
  • Contact
  • Contact Us
  • Customer Support
  • SentinelOne Status
  • Language
  • Platform
  • Singularity Platform
  • Singularity Endpoint
  • Singularity Cloud
  • Singularity AI-SIEM
  • Singularity Identity
  • Singularity Marketplace
  • Purple AI
  • Services
  • Wayfinder TDR
  • SentinelOne GO
  • Technical Account Management
  • Support Services
  • Verticals
  • Energy
  • Federal Government
  • Finance
  • Healthcare
  • Higher Education
  • K-12 Education
  • Manufacturing
  • Retail
  • State and Local Government
  • Cybersecurity for SMB
  • Resources
  • Blog
  • Labs
  • Case Studies
  • Videos
  • Product Tours
  • Events
  • Cybersecurity 101
  • eBooks
  • Webinars
  • Whitepapers
  • Press
  • News
  • Ransomware Anthology
  • Company
  • About Us
  • Our Customers
  • Careers
  • Partners
  • Legal & Compliance
  • Security & Compliance
  • Investor Relations
  • S Foundation
  • S Ventures

©2026 SentinelOne, All Rights Reserved.

Privacy Notice Terms of Use

English