What is privilege escalation?

Privilege escalation is a type of security exploit where a user gains a level of access or control that they are not authorized to have. This occurs when an attacker—or a rogue insider—finds a vulnerability in a system's security protocols, allowing them to bypass normal authentication and "step up" their permissions from a standard user to an administrator or root user.

The scenario

Consider a scenario where an employee’s account is compromised via a phishing email. Initially, the attacker only has access to that employee's basic email and internal chat tools. However, by exploiting a flaw in the company’s unpatched server software, the attacker performs privilege escalation to gain the credentials of an IT administrator. Now, instead of just reading one person’s emails, the attacker has the power to access the entire company's payroll data and shut down internal servers.

Key components of privilege escalation

Privilege escalation is typically categorized into two distinct methods based on how the attacker moves through the system.

• Vertical privilege escalation: Also known as "privilege elevation," this occurs when a user with lower-level access gains higher-level permissions (e.g., a guest user becoming an admin).
• Horizontal privilege escalation: This occurs when a user gains access to the resources or data of another user who has the same level of authority (e.g., one employee accessing another employee’s private files).
• Exploitation of vulnerabilities: This involves using software bugs, misconfigurations, or weak passwords to bypass security barriers.
• Post-exploitation: The phase where the attacker uses their new elevated status to install malware, steal sensitive data, or create "backdoors" for future access.

Benefits of preventing privilege escalation

Strictly controlling and monitoring for escalation attempts is a core part of compliance and corporate safety.

• Protection of sensitive intellectual property: By blocking escalation paths, you ensure that even if a minor security breach occurs, your most sensitive data—such as trade secrets or customer databases—remains locked behind higher security tiers.
• Integrity of system configurations: Attackers with elevated privileges often change system settings to hide their tracks. Preventing escalation ensures that your IT infrastructure remains stable and that no unauthorized "shadow" accounts are created.
• Compliance with global data laws: Frameworks like SOC2 and GDPR require organizations to have strict "Access Control" measures. Successfully preventing privilege escalation is a key indicator that your company respects the principle of least privilege (PoLP).

Comparative analysis

Privilege escalation vs. access creep

Privilege escalation is usually a fast-acting, intentional exploit used by an attacker to grab power. Access creep, on the other hand, is a slow, accidental process where an employee gradually gains more permissions than they need over several months or years due to administrative neglect.

Privilege escalation vs. insider threats

A privilege escalation is a technical event, while an insider threat is a specific type of risk. An insider threat (such as a disgruntled employee) may use privilege escalation to gain the access they need to leak data or damage the company.

Strategic implementation: How to defend against privilege escalation

Securing your organization requires a proactive approach to IT management and software hygiene.

1. Enforce the principle of least privilege (PoLP): Ensure no user has more access than necessary. If a standard user account is compromised, the lack of pre-existing admin rights makes escalation much harder for the attacker.
2. Maintain a rigorous patching schedule: Most escalation attacks exploit known software bugs. Regularly updating your OS and applications closes these "holes" before attackers can find them.
3. Implement Multi-Factor Authentication (MFA): Mandatory MFA across all apps ensures that even if an attacker steals a password to escalate their privileges, they cannot finalize the "step up" without a second physical device.
4. Audit high-level accounts: Regularly review who has "Super Admin" or "Root" access. Use your annual performance review cycle as a reminder to check if those with elevated access still require it for their current role.

Eliminate access risks with Deel IT

Privilege escalation often starts with a single weak point in your security chain. Deel IT helps you mitigate this risk by centralizing how your global workforce accesses company resources. By standardizing the use of Single Sign-On (SSO) and mandatory MFA across your integrated SaaS apps, Deel IT ensures that even if a user’s credentials are leaked, your company systems remain protected against unauthorized "elevation" attempts.

Ready to harden your organization’s defenses? Learn how Deel IT secures your global access management.

Book a demo with Deel IT now.

FAQs

Can privilege escalation happen in cloud-based teams? Absolutely. In fact, misconfigured cloud "buckets" or API keys are some of the most common targets for privilege escalation in remote and global companies today.

What is a "zero-day" escalation? This is an escalation attack that uses a vulnerability that the software developer isn't aware of yet. Because there is no patch available, these are the most dangerous types of escalation attempts.

How does automated provisioning help? IT provisioning tools help by ensuring that accounts are set up with standardized, restricted permissions from day one, leaving fewer manual configuration errors for attackers to exploit.