I believe Markdown support is what led to CVE-2026-20841 earlier this month.
20260211 https://news.ycombinator.com/item?id=46971516 Windows Notepad App Remote Code Execution Vulnerability (804 points, 516 comments)
20260210 https://msrc.microsoft.com/update-guide/vulnerability/CVE-20...
> "An attacker could trick a user into clicking a malicious link inside a Markdown file opened in Notepad"
Other recent Notepad issues:
20260207 https://news.ycombinator.com/item?id=46927098 Microsoft account bugs locked me out of Notepad – Are thin clients ruining PCs? (187 points, 284 comments)
20260127 https://news.ycombinator.com/item?id=46780451 Windows 11 January Update Breaks Notepad (60 points, 25 comments)
This is my favorite part of this story. Do you want remote code execution? Because [fixing things that aren't broken] is how you get remote code execution.
I thought it is by introducing an RCE vulnerability that you get an RCE vulnerability.
I'm being facetious of course, but this recent rhetorical trend of people confidently vouching for "pet" in "pet vs. cattle" is not a sustainable decision, even if it's admittedly plain practical on the short to medium run, or in given contexts even longer. It's just a dangerous and irresponsible lesson to blindly repeat I think.
Change happens. Evidently, while we can mechanistically rule out several classes of bugs now, RCEs are not one of those. Whatever additional guardrails they had in place, they failed to catch this *. I think it's significantly more honest to place the blame there if anywhere. If they can introduce an RCE to Notepad *, you can be confident they're introducing RCEs left and right to other components too **. With some additional contextual weighting of course.
* Small note on this specific CVE though: to the extent I looked into it [0], I'm not sure I find it reasonable to classify it as an RCE. It was a UX hiccup, the software was working as intended, the intention was just... maybe not quite wise enough.
** Under the interpretation that this was an RCE, which I question.
[0] https://www.zerodayinitiative.com/blog/2026/2/19/cve-2026-20...
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Meanwhile TextEdit on Mac always rendered HTML. Which seems useless until you realize it can also edit and save as HTML. So there's casually a wysiwyg web editor built into macOS that idk how many people use.
idk maybe TextEdit DOES have some rce not discovered yet?
maybe we should separate "real origianl text-only editor" from "fancy text editor"?
windows already got wordpad... why even lay a finger on textpad?
I think it's more likely that Microsoft is vibe coding slop garbage to replace their core apps that were literally better.
Windows 10 explorer.exe is 100x faster than Windows 11 explorer, it's not even close.
It also signals the death knell for Windows native apps. Microsoft can't make them anymore. It won't be long until even Excel is a Electron sloplication.
> Windows 10 explorer.exe is 100x faster than Windows 11 explorer, it's not even close.
I have a hard time believing this. I'm pretty sensitive to performance losses and I haven't noticed any difference between those. It wouldn't make sense either, given they should both host the same shell icon views. Are you sure the difference you're seeing is in explorer.exe? As opposed to something else, like a new shell extension or a new filesystem filter driver on Windows 11?
It is certainly perceptibly slow. Carried out a test on my 12 year old PC running Win-10 vs a new HP Win11 laptop of my friend which he bought in a hurry before price increases. Opened a directory of several thousand files with nested folders - much slower at navigation. Much slower at opening right-click menus. Much slower at pretty much everything.
M$ has now introduced web-latency into the desktop along with their adoption of web-tech into the OS. You gotta get used to staring at that spinning blue circle, counting the many precious moments of your life draining away.
> As opposed to something else, like a new shell extension or a new filesystem filter driver on Windows 11?
Ultimately, what difference does it make? The file explorer in Windows 10 is much faster than the one in Windows 11, and it's very noticeable. Turn on the old context menus, and try right clicking a file. Instant in Windows 10, visible delay in Windows 11.
Its not faster bereft of context, its just bloated. If you have enough resource to throw at it, its roughly the same. Theres some specific things that can themselves be slower, the Windows 11 Start Menu has had a lot of words written about its new implementation.
I measured once. It uses about 50% more resources and offers less feautures (or at least hides existing feautures). You may not have noticed if you had resources to spare.
It does offer some new features for businesses. Nothing useful for the consumer, and nothing to justify the massive performance loss
The best example is probably the new "Outlook", and I put that name in quotes intentionally.
In case anyone is not aware:
20231109 https://news.ycombinator.com/item?id=38212453 Windows 11 Update 23H2 is stealing users' IMAP credentials (666 points, 278 comments)
> the new Outlook is a thin wrapper around the cloud version, so the IMAP sync happens in the cloud, not locally
This was one of the most outrageous data grab in the past years. They replaced the completely working simple Mail app, which I used until that point, with this garbage, and I was just lucky that I paid attention, and I stopped for a sec what is that warning which tells you that they grab literally all of your emails.
Btw, just before that I found this page regarding Edge, and this is why I paid more attention to these things: https://learn.microsoft.com/en-us/legal/microsoft-edge/priva...
That list is way too long for my taste, and it really indicated me that Windows became completely adversarial.
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“Diverse”? Wanna expand on that one, buddy? You think you’re being subtle?
It's been so weird to watch over the decades as team sizes, budgets, and timelines have exploded even as we've abandoned once-normal things like native GUI applications as too hard in favor of "more efficient" webshit... even as the aforementioned stuff with growing team sizes, budgets, and timelines have happened.
What's weird is that AI is supposed to make development easy enough that native applications are just as fast to build than web apps
Somehow in this timeline AI can only be used to make things worse and sloppier
The engineers running the AI have to still be good.
AI code that isn't properly guided and controlled by an engineer is just as sloppy as the human behind it.
AI is an accelerate for programming, but some developers create horrible code before AI, snd AI won't change that. It just lets them do it faster.
Software used to be built for users, now it just has to look good as a screenshot.
The user is not the customer. Microsoft builds software for the enterprise now, so Windows 11 is full of new features for the enterprise and has nothing for the User.
They forgot that Enterprises are made out of Users.
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It’s also weird that the productivity increases of AI lead to layoffs instead of hiring. If we can do more with AI why are companies scrambling to maintain the current output? Does leadership lack the vision of what to do with the additional productivity?
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It was already true that an attacker could trick a user into copying a malicious link inside a file opened in Notepad to their browser, was that also a Remote Code Execution Vulnerability?
You can trick the user into copying the same malicious link, but browsers have generally already implemented the same mitigation that is Microsoft's fix for this issue inside Notepad (specifically, prompting before opening outside applications after the user enters or clicks a URL that isn't one of the built-in schemes).
It is also possible to use a different application as the http and file: url handler at the os level;
Write an app to display the (URL) argument passed and require the user to confirm or reject before running the browser using any of one or more default and configurable command line templates.
Add a "Install as default http, https, file:// uri handler" button in the settings gui. Prompt the user to install the app as default handler on first run.
Add opt-in optional debug logging of at least: {source_app_path:, url:, date_opened: } to a JSON lines log file
It looks like the exploit would cause notepad to retrieve and execute arbitrary code when a malicious link is clicked.
The worst part of enshittification is all these search tools erring on the side of too many results than not enough.