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Introduction
In a chilling discovery, cybersecurity researchers have uncovered two massive vulnerability clusters—dubbed Vault Fault and ReVault—that could hand hackers the keys to corporate identity systems, secure vaults, and even laptop firmware. Affecting industry giants CyberArk, HashiCorp, and Dell, these flaws open dangerous pathways for authentication bypass, remote code execution, and long-term persistence in sensitive environments. The findings underline a growing reality: attackers no longer need to break cryptography or crash systems to steal data—they can simply exploit subtle logic errors, firmware flaws, and policy gaps.
the Discovery
Security experts from identity protection firm Cyata identified 14 high-severity vulnerabilities in CyberArk Secrets Manager, Self-Hosted, Conjur Open Source, and HashiCorp Vault. Collectively named Vault Fault, these flaws include:
Authentication bypasses that allow attackers to impersonate legitimate users.
Privilege escalation bugs giving unauthorized admin-level control.
Remote code execution enabling attackers to run malicious commands without valid credentials.
Root token theft and policy manipulation attacks.
Among the most severe are:
CVE-2025-49827 & CVE-2025-49831 – IAM authenticator bypass in CyberArk Secrets Manager (CVSS: 9.1).
CVE-2025-49828 – Remote code execution in CyberArk Secrets Manager (CVSS: 8.6).
CVE-2025-6000 – Arbitrary remote code execution via plugin abuse in HashiCorp Vault (CVSS: 9.1).
CVE-2025-5999 – Root-level privilege escalation in HashiCorp Vault (CVSS: 7.2).
Researchers also found that HashiCorp Vault’s lockout logic can be manipulated—attackers can reset lockout counters or identify valid usernames via timing-based side channels. Furthermore, LDAP configuration loopholes can bypass MFA enforcement under certain conditions.
One attack chain combines CVE-2025-6037, CVE-2025-5999, and CVE-2025-6000 to break authentication, escalate privileges, and execute malicious code—bugs that have existed for 8–9 years. In an even more dangerous twist, attackers could delete critical security files to turn Vault into a ransomware delivery system or abuse Control Group features for stealthy, unaudited communications.
For CyberArk Conjur and Secrets Manager, researchers demonstrated an end-to-end exploit where an attacker moves from unauthenticated access to full remote code execution—without ever supplying a password, token, or AWS credentials—by manipulating IAM responses, policy resources, and embedded payload execution.
In parallel, Cisco Talos revealed five high-impact flaws in Dell’s ControlVault3 firmware, impacting over 100 laptop models. Codenamed ReVault, these vulnerabilities allow attackers to:
Bypass Windows login.
Extract cryptographic keys.
Install undetectable firmware implants that survive OS reinstalls.
Notable flaws include stack-based buffer overflows, out-of-bounds writes, and deserialization vulnerabilities—each scoring above 8.0 on the CVSS scale. Even without remote exploitation, a physical attacker could open a laptop and target the Unified Security Hub (USH) board to gain admin/system privileges.
Security experts warn that these combined vulnerabilities could serve as post-compromise persistence techniques for advanced attackers—offering covert, long-term access to critical systems.
Mitigation steps include:
Updating CyberArk, HashiCorp, and Dell systems to patched versions.
Disabling unused ControlVault services and fingerprint/NFC authentication.
Applying strict MFA and auditing configurations.
What Undercode Say: 🔍
From a cybersecurity standpoint, Vault Fault represents one of the most dangerous attack surfaces in modern enterprise environments—the identity layer. Unlike traditional breaches that rely on phishing or brute force, these flaws exploit logical weaknesses in how authentication and policy controls are implemented. This means:
Defenses like encryption and secure storage become irrelevant once authentication is subverted.
Attackers can blend malicious actions within legitimate system functions—making detection extremely difficult.
Vulnerabilities that persist for nearly a decade highlight a dangerous gap in security testing for logic-based flaws.
For Vault Fault, the attack paths are deeply integrated with core operational features of CyberArk and HashiCorp Vault. The fact that an attacker can forge IAM responses or impersonate policy entities means that trust boundaries are completely eroded. Once an attacker is in, they are effectively invisible—able to escalate privileges, plant backdoors, and exfiltrate sensitive data without tripping traditional alarms.
ReVault, on the other hand, attacks the hardware and firmware layer—below the operating system. This is critical because:
Firmware-level persistence survives OS reinstalls, disk wipes, and even some hardware replacements.
Once compromised, attackers can intercept credentials, implant malicious modules, or bypass all OS-level security.
Physical access attacks—though harder to execute at scale—are devastating in high-value targets like government, finance, and defense sectors.
From an attacker’s perspective, the combination of Vault Fault and ReVault creates a perfect multi-layer intrusion strategy:
- Exploit Vault Fault to gain remote, credential-free access to enterprise secrets.
- Deploy ReVault persistence mechanisms on endpoint devices to maintain access indefinitely.
- Operate covertly, using stealth channels to avoid detection while harvesting sensitive data.
The real-world risk isn’t just immediate data theft—it’s long-term compromise of the corporate trust infrastructure. Even if passwords are changed and systems are patched, firmware backdoors and stolen tokens could give attackers years of undetected access.
The lesson for enterprises is clear:
Update quickly and don’t rely solely on patching—implement layered defenses.
Audit IAM configurations for hidden weaknesses like case-sensitive bypasses and MFA gaps.
Include firmware in regular security testing and integrity verification cycles.
Prepare for supply chain and physical access risks, especially in high-security industries.
This isn’t a “patch and move on” scenario—it’s a wake-up call to rethink how trust, authentication, and persistence are monitored and defended in corporate environments.
✅ Fact Checker Results
Both Vault Fault and ReVault have been officially documented and patched by vendors.
No confirmed exploitation in the wild has been reported—yet.
The vulnerabilities affect widely deployed enterprise and endpoint systems, making the risk high if unpatched.
🔮 Prediction
With such long-standing, logic-based vulnerabilities exposed, we can expect:
A surge in exploit attempts targeting organizations slow to patch.
Copycat attacks using similar IAM bypass and firmware manipulation methods.
A growing security arms race between enterprise defenders and attackers focusing on stealth, persistence, and identity-based exploitation.
🕵️📝✔️Let’s dive deep and fact‑check.
References:
Reported By: thehackernews.com
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