🚨 New Fortinet vulnerability being exploited as an 0-day CVE-2026-35616 - FortiClient EMS pre-authentication API access bypass - CVSS 9.1 Critical After observing in-the-wild exploitation of this vulnerability earlier this week, Defused reported it to Fortinet under responsible disclosure. Fortinet has released an emergency hotfix - plus a scheduled patch - for FortiClient EMS 7.4.5 and 7.4.6. The vulnerability allows an unauthenticated attacker to bypass API authentication and authorization entirely, unauthorized code or commands via crafted requests. This discovery was made through our upcoming Radar feature launching next week 😇 Advisory: fortiguard.com/psirt/FG-IR-2… Track exploitation of this and other Fortinet vulns in real time and get updates on the new Defused Radar 👉 console.defusedcyber.com/sig… Credit also to @heckintosh_ for independently discovering this vulnerability 💪

⚠️php2shell (CVE-2026-109618 and CVE-2026-109619) - we have so far not seen major exploit activity around either vulnerability. Exploit attempts seem to be limited to public POCs released in the past 24 hours, which based on our testing have predominantly been inoperative. Track php2shell exploitation on Defused 👉 console.defusedcyber.com/sig…

🚨 Our Redis decoys recorded repeated scripted attempts to exploit CVE-2026-25243, a heap memory-corruption bug in Redis’s RESTORE command, overnight Oct 16-17. No prior public report exists of this CVE being attempted in the wild. One source hit the decoy five times on a timer with a identical payload: fingerprint the server, shape the heap with 26 key writes, fire a single malformed-zipmap RESTORE that triggers the documented over-read, run a throwaway Lua compute probe, then FLUSHALL the keyspace, destroying data and its own artifacts every run. Note that the bug needs command access to be exploitable. Full IOCs on Defused Radar 👉 console.defusedcyber.com/sig…

Based on the @Volexity writeup, we can now confirm genuine exploitation:

🚨 Our Ivanti Connect Secure decoys caught pre-disclosure exploitation we assess as CVE-2026-104935. Activity was recorded on Oct 1st, twelve days before Ivanti’s advisory, on both our public honeypots and customer instances. The exploit ran an unauthenticated bypass to plant an implant that runs entirely in memory and writes no files to disk - which is potentially why the advisory ships with no reliable IOCs. Full fingerprint + IOCs on Defused Radar 👉 console.defusedcyber.com/sig…

🚨Since yesterday we have been observing unauthenticated SSRF traffic against our SonicWall SMA decoys. CVE-2026-102255 (alternate access path SSRF, CVSS 10.0) was disclosed earlier this week by SonicWall. We notified Defused subscribers of the anomalous traffic via our Radar functionality. Full capture + what differs from known tooling on Defused Radar 👉 console.defusedcyber.com/sig…

🚨 In addition to the IPs on circulating on social media, some additional IPs we are observing interacting with .ctxs.receiver webshells (Citrix Netscaler) on our decoys: 194[.]127.166.19 194[.]127.166.32 194[.]127.166.36 194[.]127.166.70 194[.]127.166.126 103[.]214.20.54 81[.]94.239.8 We're also seeing multiple actors sending the crafted Pitboss log entry in-request (pre-exploit). This is possibly a variation on CVE-2026-88771 exploitation, but we have not confirmed it works. Track Citrix Netscaler activity live 👉 console.defusedcyber.com/sig…

🚨 We are seeing in-the-wild exploitation of Cisco Catalyst SD-WAN Manager (CVE-2026-76504 / API auth bypass) in our honeypots since Sep 30 UTC, about seven hours after Cisco's advisory. Attackers are hex-encode the login path (/%6a_security_check) to slip past the auth rule and reach the admin API. Source IPs and the full indicators are available on Defused Radar. console.defusedcyber.com/sig…

🚨Per @watchtowr research, CVE-2026-88771 (Citrix NetScaler) is exploitable across multiple paths (any logged field works) We have observed hundreds of hits on our decoys in the last 24h across: • /nf/auth/doAuthentication.do • /cgi/login • /p/u/doLogon.do • /logon/LogonPoint/tmindex.html • / (payload in the User-Agent header) Post-exploit intent we're seeing includes: → whoami/id to prove root → marker files (nx_verify.html) to tag vuln boxes for a target list → curl/wget/fetch pulling stage-2 → blind DNS callbacks Full IOCS are available on Defused Radar

🚨 We are seeing elevated Oracle PeopleSoft (CVE-2026-35273 / PSEMHUB RCE) activity in our honeypots since Sep 22 UTC, including simple WAF bypass attempts against the standard path-block mitigation. Source IPs and the full indicators are available on Defused Radar. console.defusedcyber.com/sig…

In May, we deployed Switchvox honeypots in coordination with @Horizon3Attack, anticipating that their newly reported vulnerabilities would eventually be exploited. On August 30, they were. Our sensors caught the first known in-the-wild exploitation attempts against CVE-2026-9586 (unauthenticated SQLi → RCE, patched in 8.4.0.2) - the same actor hitting multiple honeypots in quick succession, which suggests broad targeting of the ~4,000 internet-exposed instances. Check out the Horizon3 blog post for the full technical analysis 👇

🚨 We are observing CVE-2026-81578 / CVE-2026-82078 (PaperCut NG/MF) exploit activity in our honeypots since late yesterday UTC (Aug 29th) An actor is abusing the auth bypass to hijack PaperCut's external user-lookup. Unlike the RCE path in public writeups, the actor goes for data theft - dumping DB tables via Derby ⚠️We haven't yet verified whether the exfil route is a working one Track emerging Papercut MF exploit activity 👉 console.defusedcyber.com/sig…