DNS Nightmare: CVE-2025-40778 and the Scariest Phishing Setup Yet

In this special Halloween edition of CVE of the Week, John and Lou dive into a truly chilling scenario — a high-severity DNS poisoning flaw that could be the perfect setup for a wave of phishing attacks and credential theft across enterprise networks.The star of the episode: CVE-2025-40778, a newly discovered vulnerability in BIND 9’s resolver logic. This flaw allows unauthenticated attackers to inject forged DNS records, redirecting legitimate queries to malicious servers — all without user interaction. With a CVSS score of 8.6, exploits are already active in the wild, and over 5,900 exposed instances have been identified.But that’s just the start. The hosts explain how major outages at AWS (US-East-1) and Microsoft Azure opened the door for clever phishers to strike when users were most vulnerable — during downtime. Together, these issues illustrate a perfect storm of technical failure and human manipulation.Lou and John share practical defenses: patch immediately, enable DNSSEC, restrict recursion, and — most importantly — establish a trusted, redundant communication plan for your users before the next outage hits.⸻Key Takeaways•CVE-2025-40778 impacts BIND 9 versions from 9.11 to 9.21.12, including S1 previews.•Exploits are already circulating — attackers can poison DNS caches remotely.•Misconfigured DNS and phishing attacks can combine for devastating impact.•Immediate action: patch, enable DNSSEC, monitor cache entries, and reduce TTLs.•Prepare for outages — build redundant user communication channels to prevent panic and credential leaks.Linkshttps://kb.isc.org/docs/cve-2025-40778 https://nvd.nist.gov/vuln/detail/CVE-2025-40778https://thehackernews.com/2025/10/threatsday-bulletin-dns-poisoning-flaw.html https://www.helpnetsecurity.com/2025/10/28/bind-9-vulnerability-cve-2025-40778-poc/ ⸻Wrap-Up – Stay ConnectedIT SPARC Cast@ITSPARCCast on Xhttps://www.linkedin.com/company/sparc-sales/ on LinkedInJohn Barger@john_Video on Xhttps://www.linkedin.com/in/johnbarger/ on LinkedInLou Schmidt@loudoggeek on Xhttps://www.linkedin.com/in/louis-schmidt-b102446/ on LinkedIn Hosted on Acast. See acast.com/privacy for more information.

What this episode covers

In this special Halloween edition of CVE of the Week, John and Lou dive into a truly chilling scenario — a high-severity DNS poisoning flaw that could be the perfect setup for a wave of phishing attacks and credential theft across enterprise networks.The star of the episode: CVE-2025-40778, a newly discovered vulnerability in BIND 9’s resolver logic. This flaw allows unauthenticated attackers to inject forged DNS records, redirecting legitimate queries to malicious servers — all without user interaction. With a CVSS score of 8.6, exploits are already active in the wild, and over 5,900 exposed instances have been identified.But that’s just the start. The hosts explain how major outages at AWS (US-East-1) and Microsoft Azure opened the door for clever phishers to strike when users were most vulnerable — during downtime. Together, these issues illustrate a perfect storm of technical failure and human manipulation.Lou and John share practical defenses: patch immediately, enable DNSSEC, restrict recursion, and — most importantly — establish a trusted, redundant communication plan for your users before the next outage hits.⸻Key Takeaways•CVE-2025-40778 impacts BIND 9 versions from 9.11 to 9.21.12, including S1 previews.•Exploits are already circulating — attackers can poison DNS caches remotely.•Misconfigured DNS and phishing attacks can combine for devastating impact.•Immediate action: patch, enable DNSSEC, monitor cache entries, and reduce TTLs.•Prepare for outages — build redundant user communication channels to prevent panic and credential leaks.Linkshttps://kb.isc.org/docs/cve-2025-40778 https://nvd.nist.gov/vuln/detail/CVE-2025-40778https://thehackernews.com/2025/10/threatsday-bulletin-dns-poisoning-flaw.html https://www.helpnetsecurity.com/2025/10/28/bind-9-vulnerability-cve-2025-40778-poc/ ⸻Wrap-Up – Stay ConnectedIT SPARC Cast@ITSPARCCast on Xhttps://www.linkedin.com/company/sparc-sales/ on LinkedInJohn Barger@john_Video on Xhttps://www.linkedin.com/in/johnbarger/ on LinkedInLou Schmidt@loudoggeek on Xhttps://www.linkedin.com/in/louis-schmidt-b102446/ on LinkedIn Hosted on Acast. See acast.com/privacy for more information.

NOW PLAYING

0:00 10:38

1×

No transcript for this episode yet

We transcribe on demand. Request one and we'll notify you when it's ready — usually under 10 minutes.

Share this episode

Similar Episodes

Why Live and Evergreen Models Both Fall Short

Feb 4, 2026 ·18m

Tao Te Ching by Laozi (Author), Stephen Mitchell Audiobook, 04 of 04 Episodes

Sep 30, 2023 ·23m

Tao Te Ching by Laozi (Author), Stephen Mitchell Audiobook, 03 of 04 Episodes

Sep 30, 2023 ·27m

Tao Te Ching by Laozi (Author), Stephen Mitchell Audiobook, 02 of 04 Episodes

Sep 30, 2023 ·24m

Tao Te Ching by Laozi (Author), Stephen Mitchell Audiobook, 01 of 04 Episodes

Sep 30, 2023 ·27m

Discworld 13 - Small Gods by Terry Pratchett - 9 of 9 Episodes

Sep 26, 2023 ·65m

Similar Podcasts

Breaking News Show | eTurboNews Juergen Thomas Steinmetz News is relevant to the global travel and tourism industry, human rights and global issues.Breaking news when it happens and only from the source. LIGHTS, CAMERA, SMILE! Creatives Club Media Lights, Camera, Smile, is a podcast for anyone with a dream to share something with the world, out of the overflow of themselves - be it their mind, their heart, their personalities, and much more. Each of us are alive in this moment in time, with an innate ability to have ideas and create various things to benefit both ourselves and the people around us for a reason, and here, you will find the encouragement, the inspiration, and the motivation to do just that. Hosted by Cicily, founder of Creatives Club, she dives into various topics surrounding creativity and business. Exploring entrepreneurship for creatives in a corporate reality, sharing tips and tricks in a media centered company, answering questions regarding what a creative actually is are just a few of the things discussed on this podcast. Be encouraged to create for yourself as Cicily gets vulnerable by pivoting the camera to herself for the first time.To submit questions for Cicily to answer, or have her address certain t Invictus by Greyana, A Tomione Podfic M+G Readings Sporadic uploads thanks to gallstones.Voldemort intended the object to be used by his most loyal follower in the event that his horcruxes were destroyed, but it ended up in Hermione’s possession instead.It sent her back to a time when he was much less the monster that she’d always known him to be. Nothing could have prepared her for the intelligence and charm of Tom Riddle.He isn’t who she thought he was.Hermione discovers that it’s a dark descent into the madness of the man she should hate, but can’t… a descent she will never emerge fr The Course Mentors Podcast The Course Mentors Hey there, future course creator!Ever feel like turning your know-how into an online course is like trying to solve a Rubik's cube blindfolded? Well, grab your headphones because "The Course Mentors Podcast" is here to be your secret weapon!Meet Aimee and Odette (that's us!), your new best friends in the course creation world. We've been in the trenches for over a decade, and for the last five years, we've been rocking the online course space. Now we're here to spill all our secrets in bite-sized, 15-20 minute episodes that'll fit perfectly in your coffee breaks.No fluff, no filler - just real, actionable advice that'll take you from "um, what's a landing page?" to "holy moly, I just hit six figures!". We're talking everything from crafting your course to marketing it like a pro and building a business that'll have you pinching yourself.Whether you're dreaming of ditching the 9-to-5 grind, adding a sweet extra income str

Frequently Asked Questions

How long is this episode of IT SPARC Cast?

This episode is 10 minutes long.

When was this IT SPARC Cast episode published?

This episode was published on October 31, 2025.

What is this episode about?

Can I download this IT SPARC Cast episode?

Yes, you can download this episode by clicking the download button on the episode player, or subscribe to the podcast in your preferred podcast app for automatic downloads.

URL copied to clipboard!