At first glance, the latest Microsoft vulnerability data offers some reassurance. Total vulnerabilities have dipped slightly year-on-year, suggesting progress in secure development and transparency. But as any MSP knows, raw numbers rarely tell the full story. The real shift in 2026 isn’t about how many vulnerabilities exist it’s about how dangerous they’ve become.
According to BeyondTrust’s 2026 Microsoft Vulnerabilities Report, critical vulnerabilities doubled year-on-year, increasing from 78 to 157, despite overall vulnerabilities falling by 6%. For MSPs and their customers, that represents a major shift in risk profile. High-impact incidents involving privilege escalation, lateral movement, and identity compromise are becoming more likely, even while the overall volume of vulnerabilities appears relatively stable.
The most important finding in the report is the sharp rise in critical vulnerabilities. While total vulnerabilities dropped from 1,360 to 1,273, the number classified as critical increased from 78 to 157.
This matters because security teams don’t lose sleep over raw vulnerability counts, they worry about vulnerabilities that can cause widespread operational impact. Critical flaws are more likely to enable remote code execution, identity abuse, or privilege escalation, all of which can lead to rapid compromise across environments.
For MSPs, this reinforces the need to prioritise vulnerabilities based on impact and exploitability, not just quantity.
Elevation of Privilege (EoP) vulnerabilities accounted for 40% of all reported Microsoft vulnerabilities in 2025, representing 509 individual vulnerabilities.
This reflects a familiar attacker playbook: gain initial access, then escalate privileges as quickly as possible. In modern environments, privilege escalation often leads directly into identity systems, administrative controls, or cloud infrastructure.
The report repeatedly highlights that identity has become the new control plane for businesses. As organisations continue adopting cloud platforms, SaaS tools, and AI-driven automation, excessive privilege becomes one of the biggest risk multipliers in an environment.
This is why least privilege, identity governance, and tighter access controls are becoming just as important as patching itself.
Cloud risk was another major theme throughout the report. While overall vulnerabilities across Azure and Dynamics 365 remained relatively stable, critical vulnerabilities increased dramatically from 4 to 37.
This is a significant shift because cloud environments now sit at the centre of business operations. Identity management, automation workflows, APIs, and business applications increasingly rely on cloud control planes.
A single critical vulnerability in these environments can have a much larger blast radius than a traditional endpoint vulnerability. Rather than affecting one device, it can potentially impact identities, workloads, applications, and interconnected services simultaneously.
The key takeaway is that cloud security risk is no longer about volume it’s about concentration and impact.
Microsoft Office experienced one of the largest increases in the report, with vulnerabilities rising from 47 to 157 year-on-year. Critical vulnerabilities also jumped sharply, increasing from 3 to 31.
Despite advances in security controls, Office remains deeply embedded in daily business workflows. Email attachments, shared documents, preview panes, macros, and collaboration features continue to provide attackers with reliable entry points into organisations.
The report highlights that many of these vulnerabilities still rely on user interaction or social engineering, reinforcing that the human attack surface remains a major security challenge.
For MSPs, this is another reminder that security awareness, endpoint controls, and privilege management remain essential layers of defence.
One of the more overlooked trends in the report is the rise in information disclosure vulnerabilities, which increased from 101 to 175.
These vulnerabilities are often viewed as lower severity because they do not immediately provide system access or code execution. However, they can expose sensitive information, configuration details, or environmental data that attackers use to map infrastructure and plan more targeted attacks.
As Microsoft ecosystems become larger and more interconnected, the value of reconnaissance data increases significantly.
For defenders, this highlights the importance of visibility, monitoring, and reducing unnecessary exposure across environments.
The overall message from the report is clear: vulnerability management can no longer be treated as a numbers game.
Patching remains essential, but it must be combined with stronger identity controls, reduced standing privilege, and better visibility across both human and non-human identities.
Ultimately, vulnerabilities will always exist. The real challenge in 2026 is limiting the impact they can have once exploited and that is where MSPs can deliver the most value.
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