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 .
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SANS Stormcast Monday, November 3rd, 2025: Port 8530/8531 Scans; BADCANDY Webshells; Open VSX Security Improvements
Scans for WSUS: Port 8530/8531 TCP, CVE-2025-59287 We did observe an increase in scans for TCP ports 8530 and 8531. These ports are associated with WSUS and the scans are likely looking for servers vulnerable to CVE-2025-59287 https://isc.sans.edu/diary/Scans%20for%20Port%208530%208531%20%28TCP%29.%20Likely%20related%20to%20WSUS%20Vulnerability%20CVE-2025-59287/32440 BADCANDY Webshell Implant Deployed via The Australian Signals Directorate warns that they still see Cisco IOS XE devices not patches for CVE-2023-20198. A threat actor is now using this vulnerability to deploy the BADCANDY implant for persistent access https://www.cyber.gov.au/about-us/view-all-content/alerts-and-advisories/badcandy Improvements to Open VSX Security In reference to the Glassworm incident, OpenVSX published a blog post outlining some of the security improvements they will make to prevent a repeat of this incident. https://blogs.eclipse.org/post/mika l-barbero/open-vsx-security-update-october-2025
SANS Stormcast Friday, October 31st, 2025: Bug Bounty Headers; Exchange hardening; MOVEIt vulnerability
X-Request-Purpose: Identifying "research" and bug bounty related scans? Our honeypots captured a few requests with bug bounty specific headers. These headers are meant to make it easier to identify requests related to bug bounty, and they are supposed to identify the researcher conducting the scans https://isc.sans.edu/diary/X-Request-Purpose%3A%20Identifying%20%22research%22%20and%20bug%20bounty%20related%20scans%3F/32436 Proton Breach Observatory Proton opened up its breach observatory. This website will collect information about breaches affecting companies that have not yet made the breach public. https://proton.me/blog/introducing-breach-observatory Microsoft Exchange Server Security Best Practices A new document published by a collaboration of national cyber security agencies summarizes steps that should be taken to harden Exchange Server. https://www.nsa.gov/Portals/75/documents/resources/cybersecurity-professionals/CSI_Microsoft_Exchange_Server_Security_Best_Practices.pdf?ver=9mpKKyUrwfpb9b9r4drVMg%3d%3d MOVEit Vulnerability Progress published an advisory for its file transfer program MOVEIt . This software has had heavily exploited vulnerabilities in the past. https://community.progress.com/s/article/MOVEit-Transfer-Vulnerability-CVE-2025-10932-October-29-2025
SANS Stormcast Thursday, October 30th, 2025: Memory Only Filesystems Forensics; Azure Outage; docker-compose patch
How to Collect Memory-Only Filesystems on Linux Systems Getting forensically sound copies of memory-only file systems on Linux can be tricky, as tools like dd do not work. https://isc.sans.edu/diary/How%20to%20collect%20memory-only%20filesystems%20on%20Linux%20systems/32432 Microsoft Azure Front Door Outage Today, Microsoft s Azure Front Door service failed, leading to users not being able to authenticate to various Azure-related services. https://azure.status.microsoft/en-us/status Docker-Compose Vulnerability A vulnerability in docker-compose may be used to trick users into creating files outside the docker-compose directory https://github.com/docker/compose/security/advisories/GHSA-gv8h-7v7w-r22q
SANS Stormcast Wednesday, October 29th, 2025: Invisible Subject Character Phishing; Tomcat PUT Vuln; BIND9 Spoofing Vuln PoC
Phishing with Invisible Characters in the Subject Line Phishing emails use invisible UTF-8 encoded characters to break up keywords used to detect phishing (or spam). This is aided by mail clients not rendering some characters that should be rendered. https://isc.sans.edu/diary/A%20phishing%20with%20invisible%20characters%20in%20the%20subject%20line/32428 Apache Tomcat PUT Directory Traversal Apache released an update to Tomcat fixing a directory traversal vulnerability in how the PUT method is used. Exploits could upload arbitrary files, leading to remote code execution. https://lists.apache.org/thread/n05kjcwyj1s45ovs8ll1qrrojhfb1tog BIND9 DNS Spoofing Vulnerability A PoC exploit is now available for the recently patched BIND9 spoofing vulnerability https://gist.github.com/N3mes1s/f76b4a606308937b0806a5256bc1f918
SANS Stormcast Tuesday, October 28th, 2025: Bytes over DNS; Unifi Access Vuln; OpenAI Atlas Prompt Injection
Bytes over DNS Didiear investigated which bytes may be transmitted as part of a hostname in DNS packets, depending on the client resolver and recursive resolver constraints https://isc.sans.edu/diary/Bytes%20over%20DNS/32420 Unifi Access Vulnerability Unifi fixed a critical vulnerability in it s Access product https://community.ui.com/releases/Security-Advisory-Bulletin-056-056/ce97352d-91cd-40a7-a2f4-2c73b3b30191 OpenAI Atlas Omnibox Prompt Injection OpenAI s latest browser can be jailbroken by inserting prompts in URLs https://neuraltrust.ai/blog/openai-atlas-omnibox-prompt-injection
SANS Stormcast Monday, October 27th, 2025: Bilingual Phishing; Kaitai Struct WebIDE
Bilingual Phishing for Cloud Credentials Guy observed identical phishing messages in French and English attempting to phish cloud credentials https://isc.sans.edu/diary/Phishing%20Cloud%20Account%20for%20Information/32416 Kaitai Struct WebIDE The binary file analysis tool Kaitai Struct is now available in a web only version https://isc.sans.edu/diary/Kaitai%20Struct%20WebIDE/32422 WSUS Emergency Update Microsoft released an emergency patch for WSUS to fix a currently exploited critical vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59287 Network Security Devices Endanger Orgs with 90s-era Flaws Attackers increasingly use simple-to-exploit network security device vulnerabilities to compromise organizations. https://www.csoonline.com/article/4074945/network-security-devices-endanger-orgs-with-90s-era-flaws.html
SANS Stormcast Friday, October 24th, 2025: Android Infostealer; SessionReaper Exploited; BIND/unbound DNS Spoofing fix; WSUS Exploit
Infostealer Targeting Android Devices This infostealer, written in Python, specifically targets Android phones. It takes advantage of Termux to gain access to data and exfiltrates it via Telegram. https://isc.sans.edu/diary/Infostealer%20Targeting%20Android%20Devices/32414 Attackers exploit recently patched Adobe Commerce Vulnerability CVE-2025-54236 Six weeks after Adobe's emergency patch, SessionReaper (CVE-2025-54236) has entered active exploitation. E-Commerce security company SanSec has detected multiple exploit attempts. https://sansec.io/research/sessionreaper-exploitation Patch for BIND and unbound nameservers CVE-2025-40780 The Internet Systems Consortium (ISC.org), as well as the Unbound project, patched a flaw that may allow for DNS spoofing due to a weak random number generator. https://kb.isc.org/docs/cve-2025-40780 WSUS Exploit Released CVE-2025-59287 Hawktrace released a walk through showing how to exploit the recently patched WSUS vulnerability https://hawktrace.com/blog/CVE-2025-59287
SANS Stormcast Thursday, October 23rd, 2025: Blue Angle Software Exploit; Oracle CPU; Rust tar library vulnerability.
webctrl.cgi/Blue Angel Software Suite Exploit Attempts. Maybe CVE-2025-34033 Variant? Our honeypots detected attacks that appear to exploit CVE-2025-34033 or a similar vulnerability in the Blue Angle Software Suite. https://isc.sans.edu/diary/webctrlcgiBlue+Angel+Software+Suite+Exploit+Attempts+Maybe+CVE202534033+Variant/32410 Oracle Critical Patch Update Oracle released its quarterly critical patch update. The update includes patches for 374 vulnerabilities across all of Oracle s products. There are nine more patches for Oracle s e-Business Suite. https://www.oracle.com/security-alerts/cpuoct2025.html#AppendixEBS Rust TAR Library Vulnerability A vulnerability in the popular, but no longer maintained, async-tar vulnerability could lead to arbitrary code execution https://edera.dev/stories/tarmageddon
SANS Stormcast Wednesday, October 22nd, 2025: NTP Pool; Xubuntu Compromise; Squid Vulnerability; Lanscope Vuln;
What time is it? Accuracy of pool.ntp.org. How accurate and reliable is pool.ntp.org? Turns out it is very good! https://isc.sans.edu/diary/What%20time%20is%20it%3F%20Accuracy%20of%20pool.ntp.org./32390 Xubuntu Compromise The Xubuntu website was compromised last weekend and served malware https://floss.social/@bluesabre/115401767635718361 Squid Proxy Vulnerability The Squid team fixed an information disclosure vulnerabilty that may leak authentication credentials. https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxr Lanscope Endpoint Manager Vulnerablity https://jvn.jp/en/jp/JVN86318557/index.html
SANS Stormcast Tuesday, October 21st, 2025: Syscall() Obfuscation; AWS down; Beijing Time Attack
Using Syscall() for Obfuscation/Fileless Activity Fileless malware written in Python can uses syscall() to create file descriptors in memory, evading signatures. https://isc.sans.edu/diary/Using%20Syscall%28%29%20for%20Obfuscation%20Fileless%20Activity/32384 AWS Outages AWS has had issues most of the day on Monday, affecting numerous services. https://health.aws.amazon.com/health/status Time Server Hack China reports a compromise of its time standard servers. https://thehackernews.com/2025/10/mss-claims-nsa-used-42-cyber-tools-in.html
SANS Stormcast Monday, October 20th, 2025: Malicious Tiktok; More Google Ad Problems; Satellite Insecurity
TikTok Videos Promoting Malware InstallationTikTok Videos Promoting Malware Installation Tiktok videos advertising ways to obtain software like Photoshop for free will instead trick users into downloading https://isc.sans.edu/diary/TikTok%20Videos%20Promoting%20Malware%20Installation/32380 Google Ads Advertise Malware Targeting MacOS Developers Hunt.io discovered Google ads that pretend to advertise tools like Homebrew and password managers to spread malware https://hunt.io/blog/macos-odyssey-amos-malware-campaign Satellite Transmissions are often unencrypted A large amount of satellite traffic is unencrypted and easily accessible to eavesdropping https://satcom.sysnet.ucsd.edu
SANS Stormcast Friday, October 17th, 2025: New Slack Workspace; Cisco SNMP Exploited; BIOS Backdoor; @sans_edu reseach: Active Defense
New DShield Support Slack Workspace Due to an error on Salesforce s side, we had to create a new Slack Workspace for DShield support. https://isc.sans.edu/diary/New%20DShield%20Support%20Slack/32376 Attackers Exploiting Recently Patched Cisco SNMP Flaw (CVE-2025-20352) Trend Micro published details explaining how attackers took advantage of a recently patched Cisco SNMP Vulnerability https://www.trendmicro.com/en_us/research/25/j/operation-zero-disco-cisco-snmp-vulnerability-exploit.html https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-x4LPhte Framework BIOS Backdoor The mm command impleneted in Framework BIOS shells can be used to compromise a device pre-boot. https://eclypsium.com/blog/bombshell-the-signed-backdoor-hiding-in-plain-sight-on-framework-devices/ SANS.edu Research: Mark Stephens, Validating the Effectiveness of MITRE Engage and Active Defense https://www.sans.edu/cyber-research/validating-effectiveness-mitre-engage-active-defense/
SANS Stormcast Thursday, October 16th, 2025: Clipboard Image Stealer; F5 Compromise; Adobe Updates; SAP Patchday
Clipboard Image Stealer Xavier presents an infostealer in Python that steals images from the clipboard. https://isc.sans.edu/diary/Clipboard%20Pictures%20Exfiltration%20in%20Python%20Infostealer/32372 F5 Compromise F5 announced a wide-ranging compromise today. Source code and information about unpatched vulnerabilities were stolen. https://my.f5.com/manage/s/article/K000157005 https://my.f5.com/manage/s/article/K000156572 https://my.f5.com/manage/s/article/K000154696 Adobe Updates Adobe updated 12 different products yesterday. https://helpx.adobe.com/security.html SAP Patchday Among the critical vulnerabilities patched in SAP s products are two deserialization vulnerabilities with a CVSS score of 10.0 https://support.sap.com/en/my-support/knowledge-base/security-notes-news/october-2025.html https://onapsis.com/blog/sap-security-patch-day-october-2025/
SANS Stormcast Wednesday, October 15th, 2025: Microsoft Patchday; Ivanti Advisory; Fortinet Patches
Microsoft Patch Tuesday Microsoft not only released new patches, but also the last patches for Windows 10, Office 2016, Office 2019, Exchange 2016 and Exchange 2019. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20October%202025/32368 Ivanti Advisory Ivanti released an advisory with some mitigation steps users can take until the recently made public vulnerablities are patched. https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Endpoint-Manager-EPM-October-2025?language=en_US Fortinet Patches https://fortiguard.fortinet.com/psirt/FG-IR-25-010 https://fortiguard.fortinet.com/psirt/FG-IR-24-361
SANS Stormcast Tuesday, October 14th, 2025: ESAFENET Scans; Payroll Priates; MSFT Edge IE Mode
Scans for ESAFENET CDG V5 We do see some increase in scans for the Chinese secure document management system, ESAFENET. https://isc.sans.edu/diary/Heads%20Up%3A%20Scans%20for%20ESAFENET%20CDG%20V5%20/32364 Investigating targeted payroll pirate attacks affecting US universities Microsoft wrote about how payroll pirates redirect employee paychecks via phishing. https://www.microsoft.com/en-us/security/blog/2025/10/09/investigating-targeted-payroll-pirate-attacks-affecting-us-universities/ Attacks against Edge via IE Mode Microsoft Edge offers an IE legacy mode to support websites created for Internet Explorer. The old JavaScript engine, which is part of this mode, has been abused in recent attacks, and Microsoft will make it more difficult to enable IE Mode to counter these attacks. https://microsoftedge.github.io/edgevr/posts/Changes-to-Internet-Explorer-Mode-in-Microsoft-Edge/