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CVE-2025-43300 is the latest zero-day bug used in cyberattacks against "targeted individuals," which could signify spyware or nation-state hacking.
Also: Spain Defies Pressure to Eject Huawei, Hackers Leak North Korea Kimsuky DataThis week, Norway said Russian hackers attacked a flood gate, Spain defied pressure to eject Huawei, a cyberattack against the Office of the Pennsylvania Attorney General. Hackers leaked stolen North Korean Kimsuky data, Microsoft patched a Kerberos zero-day and a big Chrome bug bounty.
The second zero-day vulnerability found in Windows NTLM in the past two months paves the way for relay attacks and credential theft. Microsoft has no patch, but released updated NTLM cyberattack mitigation advice.
Experts Warn That Human Failures Have Led to Surge in Successful Zero-Day ExploitsVerizon executives warned that cyber defenders are struggling with fatigue amid a surge in cyberattacks targeting zero-day exploits and other vulnerabilities. It takes most enterprises nearly 55 days on average to mitigate 50% of critical vulnerabilities once patches become available, the DBIR says.
The critical vulnerability involves uninstalling third-party security products and has been used in cyberattacks.