Spencer McIntyre (@zeroSteiner) profile picture

Director of Exploit Development @VulnCheckAI Views are my own.

Cleveland, Ohio
Joined March 2011
Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)Photo by Spencer McIntyre (@zeroSteiner)
Amid conflicting reports about PHP2Shell, understanding exposure and conditions for exploitation helps defenders prioritize patching. This Microsoft Threat Intelligence Podcast episode brings together exploit research & IR perspectives on PHP2Shell. msft.it/6014aABdn Elliot Volkman speaks with Carly Sherrod, Director of Security Research at Microsoft Incident Response, and Spencer McIntyre, Director of Exploit Development at VulnCheck, about the research and response behind PHP2Shell. At the time of recording, Carly described seeing numerous malformed HTTP requests but limited evidence of successful remote code execution within her team’s incident response work, even as exploitation had been reported in the wild. Spencer explains why many early proofs of concept did not work in realistic production environments, and why an exploit that works against one application does not necessarily work against another. The discussion connects understanding PHP exposure with identifying critical business systems, reviewing telemetry for signs of compromise, and prioritizing patching. Hear more about assessing PHP2Shell risk and making evidence-based response decisions.
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CVE-2026-76570: unauth SQLi in JCTables (JoomCode's Joomla data-table), read/write to RCE. No auth, no CSRF, broken escaping. One request leaks the admin creds, then reset the password, log in, and drop a webshell. Affected through 1.10.31.2, fixed 1.21.1. vulncheck.com/blog/jctables-…
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YSoNet v2026.7.9 is out 🎉 31 → 50 gadgets 54 → 88 variants 118 → 235 gadget/serializer combinations across 17 serializers 🆕 NEW GADGETS WORTH KNOWING ▸ DataTable + DataTableTypeSpoof Same-graph DataTable root carrier for RCE. No nested BinaryFormatter or extra binder boundary. TypeSpoof emits a real DataTable subclass, so blocking only the exact DataTable wire name may not prevent reconstruction. ▸ TypeConfuseDelegateFileOperations Five delegate-confusion variants for writing, copying, moving and truncating files. No child process, compiler or WPF required. ▸ AssemblyInstallerLoad Loads a specified DLL from a local or UNC path and instantiates [RunInstaller(true)] installer types. Supported by nine serializers. ▸ DynamicUpdateMapExtension Passes x:XData to NetDataContractSerializer without a binder, allowing a XAML-only sink to carry an NDCS gadget. 🔧 NOTABLE UPDATES ▸ TypeConfuseDelegate now supports SortedDictionary and TreeSet roots, useful for testing blocklists that match only the exact SortedSet wire name. ▸ WindowsIdentity and WindowsClaimsIdentity can carry the inner BinaryFormatter graph through actor, bootstrapContext, claims or WIF’s _actor sink. Variant numbering is now aligned across both gadgets and all serializers. 🔗 github.com/irsdl/ysonet ysonet.com | ysonet.net #AppSec #YSoNet
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Metasploit 6.5 is out just in time for Hack Summer Camp. This release comes with Malleable C2 support for Meterpreter, more relaying improvements and an integrated MCP server. Check out all the details here: rapid7.com/blog/post/pt-meta…
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We have published our @rapid7 analysis of CVE-2026-16232, the auth bypass in Check Point Security Management Server that was disclosed last week as a zero-day exploited in-the-wild. Full details and PoC: rapid7.com/blog/post/ra-chec…
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Found an unpatched RCE in Gogs 👀 Any authenticated user can get code execution on the server through argument injection into git rebase. Full @rapid7 writeup + @metasploit module available now! 🔗rapid7.com/blog/post/ve-auth…
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I appreciate everyone dropping linux privesc 0days in the current AI renaissance, but to really make it feel like the good ol days someone needs to drop a weaponized pre-auth SMB or RDP RCE. We haven't had a good Windows worm in AGES.
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Coming soon to a @metasploit near you 👀
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Catch this episode of Hacktics and Telemetry on Youtube, featuring our very own @zeroSteiner talking about the Metasploit MCP! youtube.com/watch?v=A05dD51m…
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This weeks wrap up is packed with new stuff including an MCP server, and new modules for relaying NTLM from HTTP to LDAP and a Copy Fail exploit with x64 and AARCH64 support rapid7.com/blog/post/pt-meta…
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The annual wrap-up for Metasploit Framework is out now, and it includes the entirety of stats for 2025. This wrap-up and its contents would not be possible without the participation and dedication of our contributors and researchers, and all of our thanks goes to them! Metasploit Framework wouldn't be the same without you, thank you. rapid7.com/blog/post/pt-meta…
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From Zero to Shell: Hunting Critical Vulnerabilities in AVideo chocapikk.com/posts/2025/avi…
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New Metasploit module for CVE-2025-54236 (SessionReaper) - Unauthenticated RCE in Magento github.com/rapid7/metasploit…
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I've been hacking on a new Windows Named Pipe tool called PipeTap which helps analyse named pipe communications. Born out of necessity while doing some vulnerability research on a target, its been super useful in reversing it's fairly complex protocol. :)
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Come join @rapid7! I’m hiring for a Senior Security Researcher to join our team. You'll get to work on n-day analysis, zero-day research, exploit development, and more - focusing on enterprise software and appliances. Fully remote in the UK, details here: careers.rapid7.com/jobs/seni…
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Today @rapid7 is disclosing 8 new printer vulnerabilities affecting 742 models across 4 vendors. After 13 months of coordinated disclosure with Brother Industries, Ltd, we're detailing all issues including a critical auth bypass. Full details here: rapid7.com/blog/post/multipl…
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