PC World

Windows Notepad is now complex enough to have a serious security flaw

PCWorld reports that Windows Notepad’s new Markdown support feature has introduced a serious remote code execution vulnerability with a high CVSS score of 8.8/7.7. The security flaw allows malicious ...
Bleeping Computer

Windows 11 Notepad flaw let files execute silently via Markdown links

If a user opened this Markdown file in Windows 11 Notepad versions 11.2510 and earlier and viewed it in Markdown mode, the above text would appear as a clickable link. If the link is clicked with ...
TechRadar

Microsoft patches concerning Windows 11 Notepad security flaw - Markdown issues could have let hackers slip in malware without warning

Microsoft patches Windows 11 Notepad RCE flaw CVE-2026-20841 Vulnerability exploited Markdown links to execute malicious code with user permissions Patch Tuesday update fixes issue; versions 11.2510 ...
The Verge

Microsoft fixes Notepad flaw that could trick users into clicking malicious Markdown links

Bad actors could use the flaw to remotely load and execute malicious files on a victim’s computer. Bad actors could use the flaw to remotely load and execute malicious files on a victim’s computer. is ...
Futurism

Microsoft Added AI to Notepad and It Created a Security Failure Because the AI Was Stupidly Easy for Hackers to Trick

As Microsoft continues to force AI features onto users of its Windows operating system and other crucial software, glaring issues keep cropping up. Executives have promised to turn the platform into ...
Lifehacker

Microsoft Just Patched a Major Security Vulnerability for This Popular Windows App

Users could be tricked into running arbitrary code, but the issue was patched last week. February 17, 2026 Add as a preferred source on Google Add as a preferred source on Google Microsoft patched a ...
Bleeping Computer

Notepad++ boosts update security with ‘double-lock’ mechanism

Notepad++ has adopted a “double-lock” design for its update mechanism to address recently exploited security gaps that resulted in a supply-chain compromise. The new mechanism landed in Notepad++ ...
PC Magazine

Bloat Risk? Microsoft's Notepad Upgrade Also Introduced a Vulnerability

Bloat Risk? Microsoft's Notepad Upgrade Also Introduced a Vulnerability The flaw exploits Notepad’s recently added support for Markdown, a formatting language used on websites and in files, to run ...
PC Gamer

Thanks to Microsoft adding all those extra features to Notepad, it now unfortunately sports one more: An exploitation vulnerability with a high security rating

At least it's easy enough to avoid, until Notepad gets patched to fix the problem. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.
pcguide

Microsoft confirms worrying Remote Code Execution security flaw in Notepad and is rolling out a fix

When it comes to cybersecurity, Remote Code Execution is just about as bad as it gets, and that’s exactly what Microsoft has confirmed is affecting its Notepad app on Windows 11. The tech giant points ...
SecurityWeek

CISA Warns of Exploited SolarWinds, Notepad++, Microsoft Vulnerabilities

The US cybersecurity agency CISA on Thursday warned that recently disclosed SolarWinds, Notepad++, and Apple vulnerabilities have been exploited in the wild. Tracked as CVE-2025-40536 (CVSS score of 8 ...