📈 VENDOR RISK REPORT • 2025 YEAR IN REVIEW

The Top 10 Vendors Whose Products Were Hit by Critical Zero-Days in 2025

By CyberDudeBivash • October 08, 2025 • CISO Briefing

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Disclosure: This is a strategic analysis for security and business leaders. It contains affiliate links to relevant enterprise security solutions. Your support helps fund our independent research.

As 2025 has unfolded, a clear and dangerous theme has emerged in the threat landscape: attackers are overwhelmingly targeting the foundational software that underpins the global economy. This year-in-review report analyzes the vendors whose products have been at the epicenter of the most significant zero-day exploitation campaigns, providing a critical lens for CISOs to evaluate their own vendor risk.

The Top 10 At-Risk Vendor Categories of 2025

#10: Microsoft
Impacted Area: Collaboration Platforms (Teams)
The weaponization of native features in ubiquitous platforms like Microsoft Teams for malware delivery highlighted that the attack surface now extends deep inside our most trusted tools. Read the analysis.

#9: IBM
Impacted Product: Security Verify Access
A critical privilege escalation flaw in a core IAM solution demonstrated the catastrophic risk of “God Mode” security appliances, where a single bug can undermine the entire enterprise identity fabric. Read the analysis.

#8: Core Open-Source Projects
Impacted Products: Linux Kernel, Sudo
Multiple high-severity LPE flaws in foundational Linux components, including a public PoC for Sudo, proved that the core of our open-source infrastructure remains a fertile ground for attackers seeking to gain root. Read the analysis.

#7: GitLab
Impacted Product: GitLab SCM
A Stored XSS flaw leading to account takeover highlighted the immense risk to the software supply chain. A compromise of the source code management platform is a direct path to injecting malicious code. Read the analysis.

#6: Palo Alto Networks
Impacted Product: PAN-OS GlobalProtect
A surge in exploit attempts against a critical RCE proved, once again, that perimeter security appliances are a top target and that the time from disclosure to mass exploitation is now effectively zero. Read the analysis.

#5: Google
Impacted Product: Chrome Browser
Multiple urgent patches for critical RCEs in the world’s most popular browser underscored the reality that the browser remains the #1 attack vector for the vast majority of users and enterprises. Read the analysis.

#4: Fortra
Impacted Product: GoAnywhere MFT
The active exploitation of a zero-day RCE by the Medusa ransomware group was a brutal echo of the MOVEit crisis, cementing MFT platforms as the soft underbelly of enterprise data exchange and a primary target for extortion gangs. Read the analysis.

#3: Unity Technologies
Impacted Product: Unity Engine
A critical RCE in a foundational game engine put millions of gamers and thousands of games at risk, highlighting the massive “long tail” of risk inherent in ubiquitous software dependencies and shared libraries. Read the analysis.

#2: Cisco
Impacted Products: ASA/FTD Firewalls
A series of critical zero-days, culminating in a total authentication bypass exploited by state-level actors, confirmed that core network perimeter devices are on the front line of global cyber espionage. Read the analysis.

#1: Oracle
Impacted Product: E-Business Suite (EBS)
The campaign against the Oracle EBS RCE (CVE-2025-61882) was the defining security event of 2025. Its exploitation by top-tier extortion groups like Cl0p against a Tier-0 enterprise application containing the “crown jewels” of the world’s largest corporations represents the apex of supply chain risk. This crisis, tracked from the initial zero-day to the CISA warning and the public PoC, has been a brutal lesson in the fragility of critical enterprise software. Read the full analysis.

The Strategic Takeaway: Your Security is a Supply Chain Problem

For CISOs, the pattern is clear. Your greatest risks are no longer just in your own code or your own configurations; they are in the code and configurations of your most critical vendors. A robust **Third-Party Risk Management (TPRM)** program is no longer a compliance exercise; it is a core pillar of your cybersecurity strategy. You must have a clear inventory of your critical vendors, understand their security posture, and have a plan to respond when one of them inevitably suffers a breach.

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About the Author

CyberDudeBivash is a cybersecurity strategist and threat intelligence analyst with 15+ years advising CISOs and security leaders on the evolving threat landscape. [Last Updated: October 08, 2025]

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