Below the Surface

Yonesy Núñez

On Below the Surface, six-time CISO Dr. Yonesy Núñez sits down with leading security experts to get past the buzzwords and into the real work of defending an organization. Candid conversations on the threats, tradeoffs, and decisions that shape modern cybersecurity and risk.

Episodes

  1. 4d ago

    Episode 3 - PHP2Shell Special

    On October 20, the PHP security team warned that fixes for two critical vulnerabilities would ship the next day, with no details and no versions. The details leaked within a day. Governments across Europe took websites offline on purpose, and Amazon’s honeypots had already logged an exploitation attempt on October 17, four days before anyone outside the embargo was supposed to know. In this solo episode, Yonesy Núñez walks through what happened with PHP2Shell (CVE-2026-109618 and CVE-2026-109619), why it deserves more attention than the usual patch cycle, and the sequence he’d run this week as a CISO, architect, or operations lead. He also looks at what it means for the job over the next few years, as finding and exploiting bugs like this gets more automated. It closes with a solo lightning round. Advisories and sources PHP security announcement: https://www.php.net/archive/2026.php#2026-10-21-5CVE-2026-109618 (NVD): https://nvd.nist.gov/vuln/detail/cve-2026-109618CVE-2026-109619 (NVD): https://nvd.nist.gov/vuln/detail/cve-2026-109619CISA advisory, Oct 21: https://www.cisa.gov/news-events/alerts/2026/10/21/critical-vulnerabilities-php-require-immediate-patchingCISA adds both CVEs to KEV, Oct 26: https://www.cisa.gov/news-events/alerts/2026/10/26/cisa-adds-two-known-exploited-vulnerabilities-catalogNCSC-NL vendor and product status list: https://github.com/NCSC-NL/php2shellAmazon on exploitation four days before the patch: https://www.bleepingcomputer.com/news/security/amazon-says-php2shell-exploitation-began-4-days-before-patches/Cloudflare on WAF protection: https://blog.cloudflare.com/php-vulnerabilities-waf-protection/NetScaler zero-day and PHP web shells: https://www.bleepingcomputer.com/news/security/hackers-exploit-citrix-netscaler-zero-day-to-deploy-web-shells/

About

On Below the Surface, six-time CISO Dr. Yonesy Núñez sits down with leading security experts to get past the buzzwords and into the real work of defending an organization. Candid conversations on the threats, tradeoffs, and decisions that shape modern cybersecurity and risk.