Microsoft has officially ceased support for Windows 10, a decision that impacts millions of users globally. After nearly ten years on the market, this shift marks the end of complimentary security updates, bug fixes, and technical support for the operating system (OS).
The discontinuation of support leaves Windows 10 devices vulnerable to various security threats. Without routine updates, these systems become prime targets for cybercriminals. Hackers often look to exploit outdated software, turning unpatched systems into lucrative opportunities for malware and ransomware attacks.
A Flood of Vulnerabilities for Windows 10
According to findings from Cyber Express, thousands of vulnerabilities associated with Windows 10 have already been recorded in public databases like ExploitDB. Here are some of the most significant security issues:
- CVE-2025-29824: This “use after free” flaw in the Common Log File System Driver has a CVSS score of 7.8 and is actively utilized in ransomware campaigns.
- CVE-2025-29809: This vulnerability stems from insecure storage in Windows Kerberos, allowing a local bypass of key security features.
- CVE-2025-24997: A null pointer dereference in the Windows Kernel Memory presents a denial-of-service vector.
- CVE-2025-24993: This heap-based buffer overflow in NTFS is marked as “known exploited,” with a high Exploit Prediction Scoring System (EPSS) score of 2.19%.
- CVE-2025-24984: This vulnerability leads to sensitive data leakage via NTFS log files, notably flagged as exploited, with the highest EPSS score reaching 13.87%.
Many of these issues allow cyber attackers to escalate privileges, execute unauthorized code, or even compromise networks from afar. Several vulnerabilities have already been indexed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
The Windows 11 Upgrade Dilemma
In light of this change, Microsoft is urging users to migrate to Windows 11, which is still receiving active support and enhanced security features. Nonetheless, not all PCs are eligible for this upgrade due to rigid hardware requirements. A report from Forbes highlights that approximately 200 million devices worldwide that currently run Windows 10 do not meet the technical specifications necessary for a complimentary upgrade to Windows 11.
What Are the Options for Windows 10 Users?
For those who can’t or choose not to upgrade, Microsoft provides several options:
- Upgrade to Windows 11: This option enhances security, assuming the device meets the necessary requirements. Users can confirm eligibility through Settings > Update & Security > Windows Update.
- Purchase a New Windows 11 PC: Users with older computers may need to invest in new hardware capable of running Windows 11 directly.
- Extended Security Updates (ESU): For those requiring additional time before making the leap, Microsoft offers a paid subscription plan that maintains critical security patches for an extra year, though the cost may deter many.
- Continue Using Windows 10 (Unsupported): While Windows 10 systems will still operate, the absence of updates increases the risk of vulnerabilities. Microsoft advises regular data backups and heightened caution for users opting to stay on this route.
Office Support Is Also Affected
The end of support for Windows 10 extends beyond the operating system itself. As of the same date:
- Both Office 2016 and Office 2019 are no longer supported on any OS.
- Office 2021, Office 2024, and LTSC versions will continue to run on Windows 10, but they too lack support and updates.
Users are encouraged to explore Microsoft 365 or transition these licenses to a supported Windows 11 machine. It’s worth noting that support for Office 2021 and Office LTSC 2021 is set to end in October 2026.
Data Backup Is Critical
Regardless of the chosen path—be it an upgrade, signing up for ESU, or continuing with unsupported systems—data backup is vital. Whether transitioning to a new operating system or carrying on with the current version, the risks of data loss and system failure increase without proper safeguards.
Moreover, Microsoft advises users to securely erase hard drives with built-in tools prior to recycling, reselling, or donating older devices. Trade-in and recycling alternatives are available through Microsoft and collaborating PC manufacturers.
The conclusion of Windows 10 support presents significant challenges for millions of PC users globally. Those unable to transition to Windows 11 are faced with limited choices: a possibly costly ESU program or continued use of an increasingly unsafe operating system.
With the uptick in exploits and an evolving cybersecurity landscape, urgent action is essential, whether through upgrades, diligent data backup, or acquiring new hardware.
