11/12/2025
Unfortunately, this happens with forgotten-ware, sometimes...
Your Windows PC has a fax modem driver from 2006. You've never owned a fax machine. (Okay, maybe you have. But stick with me...) It's there. On EVERY Windows version. And it's been exploited. 😏
CVE-2025-24990. Microsoft's legacy code nightmare.
Here's the crazy part: A driver for old fax modems (ltmdm64.sys) has been quietly sitting on every Windows system since 2006. Possibly even Windows XP - this driver has been around that long. Windows 7, 10, 11, Server 2022, Server 2025. ALL of them.
The driver was designed for hardware nobody uses anymore. Fax modems.
But it runs with the highest system permissions possible.
Here's what's happening:
→ Driver has a security hole that lets attackers become admin
→ Works even if you don't have a fax modem
→ Sitting on every Windows computer by default
→ Has been actively exploited in the wild
Every Windows PC you've ever used. Your work laptop. Your home computer. Your company's servers. All had this security hole sitting there since 2006.
And nobody noticed.
Microsoft's solution? They're deleting the driver completely instead of fixing it.
Translation: "This 19-year-old code is so broken we're just removing it."
Security researcher Ben McCarthy explained it: "This driver is from before we knew how to write secure code. It has the highest permissions on your system. That makes it perfect for attackers."
Researchers think hackers use it to bypass antivirus and security tools.
The timeline is ridiculous:
→ 2006: Driver ships with every Windows version
→ October 2025: Researchers discover hackers are using it
→ Microsoft's fix: Just delete it
Every Windows version since 2006.
→ Windows 7, 10, 11
→ Windows Server 2022, 2025
→ Even if you never used a fax modem
Want to check if the driver is still on your system?
Press Windows + R
Type: C:\Windows\System32\drivers
Look for: ltmdm64.sys
Still there? Update immediately.
CISA (U.S. security agency) required federal agencies to patch this immediately.
Old code kills security. This driver sat on billions of computers for 19 years before anyone noticed it was broken.
Hackers noticed.
Your antivirus didn't.
This is why ethical hackers exist. We find old security nightmares like this before criminals use them.
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Hacking is not a hobby but a way of life. 🎯