A brief daily summary of what is important in information security. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minute long, summary of current network security related events. The content is late breaking, educational and based on listener input as well as on input received by the SANS Internet Stormcenter. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
SANS Stormcast Friday, September 26th, 2025: Webshells in .well-known; Critical Cisco Vulns Exploited; XCSSET Update; GoAnywhere MFT Exploit Details
September 26, 2025
6:52
5.77 MB
Downloads: 0
Webshells Hiding in .well-known Places
Our honeypots registered an increase in scans for URLs in the .well-known directory, which appears to be looking for webshells.
https://isc.sans.edu/diary/Webshells%20Hiding%20in%20.well-known%20Places/32320
Cisco Patches Critical Exploited Vulnerabilities
Cisco released updates addressing already-exploited vulnerabilities in the VPN web server for the ASA and FTD appliances.
https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_continued_attacks
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-YROOTUW
XCSSET Evolves Again
Microsoft detected a new XCSSET variant, an infostealer infecting X-Code projects.
https://www.microsoft.com/en-us/security/blog/2025/09/25/xcsset-evolves-again-analyzing-the-latest-updates-to-xcssets-inventory/
Exploitation of Fortra GoAnywhere MFT CVE-2025-10035
watchTowr analyzed the latest GoAnywhere MFT vulnerability and exploits used against it.
https://labs.watchtowr.com/it-is-bad-exploitation-of-fortra-goanywhere-mft-cve-2025-10035-part-2/