Debunking the myth: why Linux faces just as many exploits as Windows

“Linux doesn’t need patching” is one of the most persistent (and expensive) myths in security operations. It usually comes from a good place: Linux is widely trusted, open-source is peer-reviewed, and highly capable engineers run many Linux systems.

But none of that changes the basic truth: Linux is software, software has vulnerabilities, and vulnerabilities get exploited—often just as ruthlessly as they do on Windows.

This article challenges the “Linux is inherently safe” narrative using vulnerability data, patching realities, and what we repeatedly see in regulated environments such as banking.

The myth isn’t that Linux is weak—it’s that patching is optional.

Linux can be exceptionally secure when it is hardened, monitored, and patched. The myth is the belief that Linux security is “self-maintaining” because it’s open-source or perceived as less targeted than Windows.

Attackers do not care about operating system ideology. They care about:

• Exposed services (SSH, web servers, APIs)
• Privilege escalation paths
• Weak change control and long patch backlogs
• Supply chain opportunities (packages, repos, CI/CD)

In other words, the exploitability of your environment matters more than the OS badge.

Vulnerability volume: Linux and Windows both produce a steady stream of CVEs

Counting CVEs is not a perfect proxy for real-world risk, but it’s a strong correction to the claim that “Linux has hardly any vulnerabilities”.

For example, a 2024 CVE statistics breakdown shows hundreds of vulnerabilities across both Microsoft Windows products and Linux components—with the Linux kernel itself showing 364 vulnerabilities in 2024, while Windows client and server editions each sit in the same order of magnitude. (stack. watch)

Additionally, vulnerability research focused on desktop OS categories has shown that both Windows and Linux continue to accumulate meaningful counts of critical and exploitable issues year over year, reinforcing that patch management remains essential on both platforms. (factis.com)

The takeaway: Linux is not “low-vuln” by default. It’s “patch-or-pay”, like everything else.

Patch Tuesday vs Linux patch reality: structure beats good intentions

One reason organisations feel safer on Windows is the operational predictability it offers.

Microsoft’s security update cadence is well-known: updates are typically aligned with a monthly rhythm (Patch Tuesday/Update Tuesday), which helps teams schedule testing, change approvals, and deployment waves. (techtarget.com)

Linux patching is different:

• There is no single universal patch day across the Linux ecosystem.
• Patching depends on distro (Ubuntu, Debian, RHEL, SUSE, Amazon Linux), package maintainers, and your internal repo mirrors.
• Critical fixes may land quickly upstream, but production rollout can still stall in change control.

Quick comparison: what ops teams experience in practice

The uncomfortable truth: open-source can still leave you exposed

Open-source transparency helps defenders—until it doesn’t.

Supply chain shockwaves (XZ Utils backdoor)

In March 2024, the security community responded to a backdoor in XZ Utils (tracked as CVE-2024-3094, with a CVSS score of 10). CERT-EU explicitly recommended downgrading to a non-compromised version due to the risk of remote code execution under specific conditions. (cert.europa.eu)

This wasn’t “a Linux bug” in the simplistic sense; it was a supply chain event that reminded everyone: trust is earned continuously, and patching (including rollbacks) is part of incident response, not just maintenance.

Known exploited Linux privilege escalation (sudo)

If you need a clean illustration that Linux is actively exploited in the wild, look at CVE-2025-32463 (sudo).

NIST’s NVD record notes it is in CISA’s Known Exploited Vulnerabilities (KEV) catalogue, with a documented “date added” and a required remediation timeline for affected organisations. (nvd.nist.gov)

This is exactly what “Linux doesn’t get exploited” gets wrong: Linux vulnerabilities don’t just exist—they get operationalised.

Why banking environments prove the point (without naming names)

Banks and financial institutions often run mixed estates by design:

• Windows for end-user computing, some identity components, and vendor apps
• Linux for core services, web tiers, middleware, databases, and security tooling

What we repeatedly see in mature banking environments is not “Windows risky, Linux safe”. Instead, we see two predictable patterns:

1. Windows is patched because the process is industrialised.
   There’s often a consistent rhythm tied to monthly maintenance windows, with clear reporting for audit and regulators.
2. Linux is patched “when possible” because ownership is diffuse.
   Different teams own different stacks (app, platform, DevOps, vendor-managed appliances). When a critical package fix drops, it may be no one’s top priority until scanning reports become uncomfortable—or untilan incident forces the issue.

That is how supposedly “secure” Linux estates accumulate exposure: not through laziness, but through operational ambiguity.

The hidden accelerant: vulnerability intelligence and scoring delays

Even strong teams struggle when vulnerability context arrives late.

NIST has publicly documented processing constraints and disruptions related to CVE format changes and ingestion, contributing to delays and backlogged enrichment workflows. (nist.gov)

If your vulnerability triage relies heavily on “official scoring being present everywhere, quickly”, you can end up with:

• delayed severity classification
• delayed prioritisation
• delayed patching
• and a longer window for exploitation

This impacts Linux and Windows programmes alike—but in Linux estates (with more package diversity), the effect can be amplified.

What to do instead: treat patching like detection engineering

If your patch programme is reactive, it becomes a perpetual race. A more resilient approach is to treat patching as a security capability with the same discipline as your SOC.

A practical baseline looks like:

• Asset truth: know what you run (distro, kernel, packages, versions, ownership)
• Exploit-led prioritisation: prioritise KEV-listed and internet-exposed paths first
• Change-ready packaging: create patch “bundles” that map to services, not just CVEs
• Proof of patch: validate remediation, don’t just assume updates applied cleanly

And crucially: connect vulnerability operations to your SOC workflow, so real detections and threat intelligence inform patching decisions.

Where Microsoft Sentinel SOC automation fits (and why it matters for Linux too)

Whether the endpoint is Windows or Linux, the operational challenge is the same: too many alerts, too much context-switching, and not enough time to write bespoke queries.

That’s why Microsoft Sentinel SOC automation is no longer optional for lean teams—it’s how you keep pace without burning out.

At SecQube, the goal is to make Sentinel operations simpler and more consistent across tenants and customer environments through:

• Harvey AI, a conversational assistant that guides incident investigation steps based on the incident itself (secqube.com)
• a multi-tenant security portal with built-in ticketing and change management
• automated workflows that reduce dependence on deep query expertise during triage

If you want to see how this approach supports faster triage and more consistent response outcomes, explore SecQube and the Harvey AI feature page. (secqube.com)

Bottom line: Linux is not a free pass—patching is the price of reliability

Linux isn’t “worse” than Windows. It’s simply not magical.

If your organisation still believes Linux doesn’t need patching, the risk isn’t theoretical—it’s operational. The fix is not a new opinion about operating systems, but a repeatable security process that combines:

• disciplined patch governance
• exploit-aware prioritisation
• and SOC workflows that scale with reality, not headcount