Daily cybersecurity news for practitioners. Vulnerabilities, defenses, threats, network security insight, research and more to make you sound smarter as you get to the office in the morning. New each weekday.
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SANS ISC Handlers Podcasts
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SANS Stormcast Monday, December 22nd, 2025: TLS Callbacks; FreeBSD RCE; NIST Time Server Issues
6:00
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DLLs & TLS Callbacks As a follow-up to last week's diary about DLL Entrypoints, Didier is looking at TLS ( Thread Local Storage ) and how it can be abused. https://isc.sans.edu/diary/DLLs%20%26%20TLS%20Callbacks/32580 FreeBSD Remote code execution via ND6 Router Advertisements A critical vulnerability in FreeBSD allows for remote code execution. Bu…
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SANS Stormcast Friday, December 19th, 2025: Less Vulnerabie Devices; Critical OneView Vulnerablity; Trufflehog finds JWTs
4:37
4:37
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Positive trends related to public IP range from the year 2025 Fewer ICS systems, as well as fewer systems with outdated SSL versions, are exposed to the internet than before. The trend isn t quite clean for ISC, but SSL2 and SSL3 systems have been cut down by about half. https://isc.sans.edu/diary/Positive%20trends%20related%20to%20public%20IP%20ra…
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SANS Stormcast Thursday, December 18th, 2025: More React2Shell; Donicwall and Cisco Patch; Updated Chrome Advisory
6:10
6:10
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Maybe a Little Bit More Interesting React2Shell Exploit Attackers are branching out to attack applications that initial exploits may have missed. The latest wave of attacks is going after less common endpoints and attempting to exploit applications that do not have Next.js exposed. https://isc.sans.edu/diary/Maybe%20a%20Little%20Bit%20More%20Intere…
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SANS Stormcast Wednesday, December 17th, 2025: Beyond RC4; Forticloud SSO Vuln Exploited; FortiGate SSO Exploited;
6:38
6:38
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6:38
Beyond RC4 for Windows authentication Microsoft outlined its transition plan to move away from RC4 for authentication and published guidance and tools to facilitate this change. https://www.microsoft.com/en-us/windows-server/blog/2025/12/03/beyond-rc4-for-windows-authentication FortiCloud SSO Login Vuln Exploited Arctic Wolf observed exploit attemp…
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SANS Stormcast Tuesday, December 16th, 2025: Current React2Shell Example; SAML woes; MSMQ issues after patch;
5:45
5:45
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More React2Shell Exploits CVE-2025-55182 Our honeypots continue to detect numerous React2Shell variants. Some using slightly modified exploits https://isc.sans.edu/diary/More%20React2Shell%20Exploits%20CVE-2025-55182/32572 The Fragile Lock: Novel Bypasses For SAML Authentication SAML is a tricky protocol to implement correctly, in particular if dif…
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SANS Stormcast Monday, December 15th, 2025: DLL Entry Points; ClickFix and Finger; Apple Patches
6:45
6:45
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Abusing DLLs EntryPoint for the Fun DLLs will not just execute code when some of their functions are called, but also as they are loaded. https://isc.sans.edu/diary/Abusing%20DLLs%20EntryPoint%20for%20the%20Fun/32562 Apple Patches Everything: December 2025 Edition Apple released patches for all of its operating systems, fixing two already exploited…
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SANS Stormcast Friday, December 12th, 2025: Local AI Models; Mystery Chrome 0-Day; SOAPwn Attack
6:56
6:56
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Using AI Gemma 3 Locally with a Single CPU Installing AI models on modes hardware is possible and can be useful to experiment with these models on premise https://isc.sans.edu/diary/Using%20AI%20Gemma%203%20Locally%20with%20a%20Single%20CPU%20/32556 Mystery Google Chrome 0-Day Vulnerability Google released an update for Google Chrome fixing a vulne…
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SANS Stormcast Thursday, December 11th, 2025: Possible CVE-2024-9042 variant; react2shell exploits; notepad++ update hijacking; macOS priv escalation
6:58
6:58
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6:58
Possible exploit variant for CVE-2024-9042 (Kubernetes OS Command Injection) We observed HTTP requests with our honeypot that may be indicative of a new version of an exploit against an older vulnerability. Help us figure out what is going on. https://isc.sans.edu/diary/Possible%20exploit%20variant%20for%20CVE-2024-9042%20%28Kubernetes%20OS%20Comma…
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SANS Stormcast Wednesday, December 10th, 2025: Microsoft, Adobe, Ivanti, Fortinet, and Ruby patches.
8:04
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Microsoft Patch Tuesday Microsoft released its regular monthly patch on Tuesday, addressing 57 flaws. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20December%202025/32550 Adobe Patches Adobe patched five products. The remote code execution in ColdFusion, as well as the code execution issue in Acrobat, will very likely see exploits soon. h…
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SANS Stormcast Tuesday, December 9th, 2025: nanoKVM Vulnerabilities; Ghostframe Phishing; WatchGuard Advisory
6:26
6:26
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nanoKVM Vulnerabilities The nanoKVM device updates firmware insecurely; however, the microphone that the authors of the advisory referred to as undocumented may actually be documented in the underlying hardware description. https://www.tomshardware.com/tech-industry/cyber-security/researcher-finds-undocumented-microphone-and-major-security-flaws-in…
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SANS Stormcast Monday, December 8th, 2025: AutoIT3 FileInstall; React2Shell Update; Tika Vuln
5:34
5:34
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AutoIT3 Compiled Scripts Dropping Shellcodes Malicious AutoIT3 scripts are usign the FileInstall function to include additional scripts at compile time that are dropped as temporary files during execution. https://isc.sans.edu/diary/AutoIT3%20Compiled%20Scripts%20Dropping%20Shellcodes/32542 React2Shell Update The race is on to patch vulnerable syst…
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SANS Stormcast Friday, December 5th, 2025: Compromised Govt System; React Vuln Update; Array Networks VPN Attacks
4:35
4:35
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Nation-State Attack or Compromised Government? [Guest Diary] An IP address associated with the Indonesian Government attacked one of our interns' honeypots. https://isc.sans.edu/diary/Nation-State%20Attack%20or%20Compromised%20Government%3F%20%5BGuest%20Diary%5D/32536 React Update Working exploits for the React vulnerability patched yesterday are n…
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SANS Stormcast Thursday, December 4th, 2025: CDN Headers; React Vulnerabiity; PickleScan Patch
6:44
6:44
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Attempts to Bypass CDNs Our honeypots recently started receiving scans that included CDN specific headers. https://isc.sans.edu/diary/Attempts%20to%20Bypass%20CDNs/32532 React Vulnerability CVE-2025-55182 React patched a critical vulnerability in React server components. Exploitation is likely imminent. https://react.dev/blog/2025/12/03/critical-se…
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SANS Stormcast Wednesday, December 3rd, 2025: SmartTube Compromise; NPM Malware Prompt Injection Attempt; Angular XSS Vulnerability
6:06
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SmartTube Android App Compromise The key a developer used to sign the Android YouTube player SmartTube was compromised and used to publish a malicious version. https://github.com/yuliskov/SmartTube/issues/5131#issue-3670629826 https://github.com/yuliskov/SmartTube/releases/tag/notification Two Years, 17K Downloads: The NPM Malware That Tried to Gas…
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SANS Stormcast Tuesday, December 2nd, 2025: Analyzing ToolShell from Packdets; Android Update; Long Game Malicious Browser Ext.
5:49
5:49
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Hunting for SharePoint In-Memory ToolShell Payloads A walk-through showing how to analyze ToolShell payloads, starting with acquiring packets all the way to decoding embedded PowerShell commands. https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Hunting%20for%20SharePoint%20In-Memory%20ToolShell%20Payloads/32524 Android Security Bulletin December 20…
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SANS Stormcast Monday, December 1st, 2025: More ClickFix; Teams Guest Access; Geoserver XXE Vulnerablity
5:42
5:42
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Fake adult websites pop realistic Windows Update screen to deliver stealers via ClickFix The latest variant of ClickFix tricks users into copy/pasting commands by displaying a fake blue screen of death. https://www.acronis.com/en/tru/posts/fake-adult-websites-pop-realistic-windows-update-screen-to-deliver-stealers-via-clickfix/ B2B Guest Access Cre…
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SANS Stormcast Wednesday, November 26th, 2025: Attacks Against Messaging; Passwords in Random Websites; Fluentbit Vuln; #thanksgiving
6:07
6:07
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6:07
Spyware Allows Cyber Threat Actors to Target Users of Messaging Applications Spyware attacks messaging applications in part by triggering vulnerabilities in messaging applications but also by deploying tools like keystroke loggers and screenshot applications. https://www.cisa.gov/news-events/alerts/2025/11/24/spyware-allows-cyber-threat-actors-targ…
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SANS Stormcast Tuesday, November 25th, 2025: URL Mapping and Authentication; SHA1-Hulud; Hacklore
6:11
6:11
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Conflicts between URL mapping and URL based access control. Mapping different URLs to the same script, and relying on URL based authentication at the same time, may lead to dangerous authentication and access control gaps. https://isc.sans.edu/diary/Conflicts%20between%20URL%20mapping%20and%20URL%20based%20access%20control./32518 Sha1-Hulud, The Se…
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SANS Stormcast Monday, November 24th, 2025: CSS Padding in Phishing; Oracle Identity Manager Scans Update;
4:59
4:59
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Use of CSS stuffing as an obfuscation technique? Phishing sites stuff their HTML with benign CSS code. This is likely supposed to throw of simple detection engines https://isc.sans.edu/diary/Use%20of%20CSS%20stuffing%20as%20an%20obfuscation%20technique%3F/32510 Critical Oracle Identity Manager Flaw Possibly Exploited as Zero-Day Early exploit attem…
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SANS Stormcast Friday, November 21st, 2025: Oracle Idendity Manager Scans; SonicWall DoS Vuln; Adam Wilson (@sans_edu) reducing prompt injection.
14:09
14:09
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14:09
Oracle Identity Manager Exploit Observation from September (CVE-2025-61757) We observed some exploit attempts in September against an Oracle Identity Manager vulnerability that was patched in October, indicating that exploitation may have occurred prior to the patch being released. https://isc.sans.edu/diary/Oracle%20Identity%20Manager%20Exploit%20…
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SANS Stormcast Thursday, November 20th, 2025: Unicode Issues; FortiWeb More Vulns; DLink DIR-878 Vuln; Operation WrtHug and ASUS Routers
6:34
6:34
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6:34
Unicode: It is more than funny domain names. Unicode can cause a number of issues due to odd features like variance selectors and text direction issues. https://isc.sans.edu/diary/Unicode%3A%20It%20is%20more%20than%20funny%20domain%20names./32472 FortiWeb Multiple OS command injection in API and CLI A second silently patched vulnerability in FortiW…
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SANS Stormcast Wednesday, November 19th, 2025: Kong Tuke; Cloudflare Outage
4:38
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KongTuke Activity This diary investigates how a recent Kong Tuke infections evolved all the way from starting with a ClickFix attack. https://isc.sans.edu/diary/KongTuke%20activity/32498 Cloudflare Outage Cloudflare suffered a large outage today after an oversized configuration file was loaded into its bot protection service https://x.com/dok2001 G…
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SANS Stormcast Tuesday, November 18th, 2025: Binary Expression Decoding. Tea NPM Pollution; IBM AIX NIMSH Vulnerability
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4:58
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Decoding Binary Numeric Expressions Didier updated his number to hex script to support simple arithmetic operations in the text. https://isc.sans.edu/diary/Decoding%20Binary%20Numeric%20Expressions/32490 Tea Token NPM Pollution The NPM repository was hit with around 150,000 submissions that did not contain any useful contributions, but instead atte…
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SANS Stormcast Monday, November 17th, 2025: New(isch) Fortiweb Vulnerability; Finger and ClickFix
7:10
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Fortiweb Vulnerability Fortinet, with significant delay, acknowledged a recently patched vulnerability after exploit attempts were seen publicly. https://isc.sans.edu/diary/Honeypot+FortiWeb+CVE202564446+Exploits/32486 https://labs.watchtowr.com/when-the-impersonation-function-gets-used-to-impersonate-users-fortinet-fortiweb-auth-bypass/ https://fo…
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SANS Stormcast Friday, November 14th, 2025: SmartApeSG and ClickFix; Formbook Obfuscation Tricks; Sudo-rs Vulnerabilities; SANS Holiday Hack Challenge
10:09
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SmartApeSG campaign uses ClickFix page to push NetSupport RAT A detailed analysis of a recent SamtApeSG campaign taking advantage of ClickFix https://isc.sans.edu/diary/32474 Formbook Delivered Through Multiple Scripts An analysis of a recent version of Formbook showing how it takes advantage of multiple obfuscation tricks https://isc.sans.edu/diar…
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