PHP2Shell and the 5-Hour Window to Patch a 9.2 CVE

PHP runs a huge share of the web. So when two 9.2-rated remote code execution vulnerabilities, dubbed PHP2Shell, were disclosed in PHP core, the clock started immediately. Exploit attempts climbed from tens of thousands in the first hour to millions within a few hours. Byron DeLaMatre, Director of Operations & Senior Full-Stack Developer at Delta Systems, led the response. In this episode of SaaS That App, he joins Aaron Marchbanks to share what that response looked like: prepping the night before, patching everything else ahead of the drop, and feeding the CVE into Claude to generate infrastructure-as-code mitigations while patching. They also dig into AI-powered vulnerability discovery, rapid security patching, defense-in-depth security, and why patch management gets harder the longer technical debt sits. What You’ll Learn: Why severe CVEs can move from disclosure to mass exploitation within hours What unauthenticated remote code execution actually puts at risk Why WAFs and other mitigations can buy time but don’t replace patching How defense in depth reduces reliance on any single security tool How Delta used Claude and infrastructure-as-code during the response Why outdated PHP versions make emergency patching much harder How AI can also help teams work through targeted legacy upgrades Why technical debt is easier to pay down before your “hair is on fire” Byron DeLaMatre is a Director Of Operations & Senior Full-Stack Developer at Delta Systems with nearly 20 years of experience working with PHP development and infrastructure. His work spans systems administration, security vulnerabilities, patch deployment, legacy infrastructure, and the day-to-day reality of keeping production systems current when high-severity CVEs land. This podcast is brought to you by Delta Systems, your one-stop shop for front-end, back-end, and full-stack software development. At Delta, Justin and Aaron share the same philosophy when it comes to clients: they treat people like colleagues, not just customers. Maybe that’s why Delta typically spends years working with the same companies: how many software engineering firms can you say that about? So, if you’ve got a big SaaS project in mind but have no idea where to start, come and get a free scope and estimate from Delta Systems at: https://go.fame.so/J1TUtvR2 Got a burning idea for an episode, or a SaaS question you absolutely must know the answer to? Leave us a voice memo: https://www.speakpipe.com/SaasThatApp. #Cybersecurity #CVE #PHP #PatchManagement #SaaS #PHP2Shell #AIinSecurity #ClaudeAI #IncidentResponse #DevSecOps Highlights: [02:42] Meet the 9.2 PHP2Shell CVEs [04:01] The CVE That Gave a Warning [06:22] Hidden in PHP for 13 Years [07:36] AI Just Changed the Security Clock [08:13] The Five-Hour Exploit Window [10:17] Patch First and Mitigate Second. [13:03] The Open-Source Bottleneck [17:00] Why One Security Layer Isn’t Enough [19:56] Can Claude Fix Legacy PHP? [20:41] Tech Debt Always Sends the Bill [21:35] Patch Often and Patch Fast Episode Resources: Byron DeLaMatre on LinkedIn Aaron Marchbanks on LinkedIn Delta Systems Website Saas That App is handcrafted by our friends over at: fame.so Check out our three most downloaded episodes: AI-Assisted Development: Expectations vs. Reality with Richardson Dackam How to Price SaaS for Maximum Growth with Dan Balcauski You're Shipping Constantly - So Why Aren't You Growing? With Daniel Layfield We’d love your feedback. Please take a moment to fill out our audience questionnaire: https://forms.gle/DN8hWFDcE9jwvNKo6 Your input helps us shape future episodes and continue bringing you practical, real-world insights into building B2B web applications.