PERSONAL TECHNOLOGY NOTES Pck
Curious
by nature.
PCK’s personal technology blog, with notes and projects on software, computer systems, embedded development and AI.
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> inspect_php_runtime_
[ alert ] critical CVEs found
[ fixed ] patched releases available▌
[ alert ] critical CVEs found
[ fixed ] patched releases available▌
Two critical PHP vulnerabilities: impact and what to do
What caused the two critical flaws in PHP, who should take action, and how to update.
Read the article ↗ FROM MY NOTEBOOK
Recent writing.
01NOV 2026↗
02OCT 2026↗
03OCT 2026↗
04OCT 2026↗
Remote code execution vulnerability in Microsoft Paint
CVE-2026-83844 in Microsoft Paint: affected versions, the fix, and what an out-of-bounds read means.
The Claude Code extension attack: what happened in Cursor?
What the malicious code in version 2.1.313 on Cursor’s extension marketplace did.
Building an operating system from scratch: PckOS
Where my seven-year hobby kernel project had reached in QEMU.
Two critical PHP vulnerabilities: impact and what to do
PHP’s new RCE flaws, AI’s role in their discovery, and the available fixes.
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BEHIND THE SCREEN
Hi, I’m pck.
With nearly 20 years of experience in software and computer systems, I work on demanding engineering projects, embedded systems, kernel development and custom AI solutions.
Engineering support ↗ON MY MINDsecure open sourcepeople + machines
NEARLY 20 YEARS OF EXPERIENCE