Caitlin Condon (@catc0n) header
Caitlin Condon (@catc0n) profile picture

Adventurer. Takes a lot of photos, calls many places home. Research VP @VulnCheckAI. Previously @Rapid7 / @metasploit. Opinions mine. She/her.

Boston, MA
Joined October 2010
Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)Photo by Caitlin Condon (@catc0n)
Announcing Initial Access community edition: A free, open-source repo of @VulnCheckAI-authored initial access exploits, each of which comes with a PCAP, target Docker container, and Snort/Suricata rules. New additions every Monday, contributions welcome: vulncheck.com/blog/initial-a…
2
12
1
31
2,567
Caitlin Condon retweeted
my AI agents after I give them full access and tell them to be careful
277
1,980
216
18,327
938,643
Caitlin Condon retweeted
AI is making vulnerabilities easier to find. Who’s going to fix them? VulnCheck’s Josh Bressers joined @CyberScoop’s Safe Mode podcast to discuss AI-generated reports, the pressure on open-source maintainers and the human work behind fixes. Listen: cyberscoop.com/radio/how-vul…
1
1
143
Caitlin Condon retweeted
VulnCheck Initial Access Intelligence has surpassed 1,000 exploits. To mark the milestone, we’re opening Initial Access Community with 40 free exploits, detection rules and testing artifacts. New additions every Monday. Learn more: vulncheck.com/blog/initial-a…
2
3
174
Caitlin Condon retweeted
again vulncheck setting the bar up in the sky!! this is something I believe the industry needed for a long time. that is shouldn't be lost in the timeline 🔥🔥🔥
Announcing Initial Access community edition: A free, open-source repo of @VulnCheckAI-authored initial access exploits, each of which comes with a PCAP, target Docker container, and Snort/Suricata rules. New additions every Monday, contributions welcome: vulncheck.com/blog/initial-a…
1
6
1,396
Caitlin Condon retweeted
One thing we do well at @VulnCheckAI is develop exploits and associated detections. We’ve wanted to share more of this work with the security community for a long time, and we’re finally making it happen. New exploits every Monday. Pull requests welcome! github.com/vulncheck-oss/ini…
1
5
1
16
1,351
Caitlin Condon retweeted
8
71
13
388
25,033
Caitlin Condon retweeted
I had a minute over the weekend to look at dropped binaries in Canary Intelligence. There were a bunch of neat ones, but I picked just one to write up. An attacker originating from Japan went after one of our canaries affected by CVE-2026-42589. vulncheck.com/blog/cache-me-…
4
7
789
Our team got code execution working in on PHP 8.2 and 8.3 today, which rounds out our testing across supported version streams. There won’t be a universal exploit, but exploitability for RCE with ASLR is definitely possible across the affected version range.
It's taking very talented security engineering orgs until now to get the exploits working in these scenarios. Unskilled people even with AI aren't getting these results.
6
5
48
3,728
Caitlin Condon retweeted
this week
9
432
7
5,692
57,276
Caitlin Condon retweeted
Sorry folks, we have a confirmed PHP compromise with post-exploit activity. Still not the widespread outbreak we all braced for, but it’s actively exploited in the wild. Updated threat brief: unit42.paloaltonetworks.com/…
23
110
15
363
81,108
Caitlin Condon retweeted
maybe the point of cybersecurity was the friends we made along the way
22
240
20
1,680
35,449
Our team's (private) #php2shell exploit now supports: - PHP 8.4.10 - 8.4.26 on AMD64 + ARM64 with ASLR - PHP 8.5.10 and 8.5.11 on AMD64 + ARM64 with ASLR * WordPress exploitation on default Docker installs running the above versions of PHP vulncheck.com/blog/php2shell…
6
15
3
115
24,680
Thx for the messages fam, but @VulnCheckAI already had an RCE exploit that bypassed ASLR. I just wanted the TAs to give us *tHe gOoD sHiT* so we could catalog all their techniques :)
lots of public poc being thrown, but no aslr bypasses. please, TAs, give us *tHe gOoD sHiT*
4
363
Caitlin Condon retweeted
So basically, today PHP got two critical bugs that let anyone run code on your server without even logging in, which is bad, and then the details leaked before the patch was even out, which is worse, and it works on WordPress and MediaWiki and Magento and Joomla and Laravel, and Censys says like 1.5 million servers are running a version with no fix, so the NSA was like "take your system offline," and the FBI was like "take your system offline," and CISA and the UK and CERT-EU were all like "take your system offline," and then the Prime Minister of Japan, the actual Prime Minister, posted at 5:55 in the morning telling 48.8 million people to take their system offline, so everyone took their system offline, like the Dutch cybersecurity agency took its own website offline, and the Dutch parliament went offline, and the Port of Rotterdam went offline, and Finland and France and Denmark started pulling government sites, and Wikipedia went down, and Archive.org went down, and Asana and GOG and Something Awful went down, and the University of Vienna's webmail went down for some reason, and that's just PHP. Because GitLab also dropped a CVSS 10.0, which is the highest score they give out, for a bug that's been there since 2014, so that's every self-hosted GitLab for twelve years, and then LiteLLM 1.107.0 got hijacked and shipped a credential stealer and a remote access trojan in every single wheel and the Docker images, including latest, and you didn't even have to import it, just installing it was enough, and it's the second time this year, and then Railway paused every deployment on the entire platform because someone got into the environment variables, so now everyone has to rotate every secret they've ever stored there, and TiDB Cloud said someone was walking around inside with stolen credentials for basically a month and an extortion group says they took 10.6 terabytes, and Zeabur got breached for the second time in two months and is just shutting down, like the whole company, and Node.js patched remote code execution and a TLS bypass, and CISA says Plex is being actively exploited, and someone took over 300 Tor exit relays to steal SSH passwords, and SafePay ransomware has hit over 600 critical infrastructure orgs, and India's biggest bank filed a data loss incident, and Japan has been in an official state of emergency in cyberspace since October 9, which honestly explains the 5:55 AM post. Oh, and eMudhra, a certificate authority that's issued over 60 million certificates, whose entire job is proving websites are who they say they are, was supposed to be using private keys that are random numbers over a hundred digits long, and one of them was 4. Just 4. And the others were like 66 and 237. Anyway, it's Wednesday.
1,077
8,932
1,654
69,379
4,216,633
Caitlin Condon retweeted
Replying to @catc0n
1
1
3
329
lots of public poc being thrown, but no aslr bypasses. please, TAs, give us *tHe gOoD sHiT*
PHP2Shell leaks sparked a scramble for answers. VulnCheck reproduced what we believe are both flaws Oct. 20 and has monitored activity since, observing a failed webshell attempt from a China-based IP. Research, IOCs and guidance. More updates to come: vulncheck.com/blog/php2shell…
1
2
1
9
1,432