21 July 2026
Reference: CVE-2025-33053
1. What is being reported?
The vulnerability involves internet shortcut files that can be manipulated by attackers to control file names or paths. This allows them to execute malicious code on a computer over a network without permission.
2. What this means in plain English
If exploited, this flaw could let attackers take control of your computers remotely, potentially leading to data theft, disruption, or malware infection. Small organisations using Windows and Microsoft Office or Teams could be at risk if these files are opened or accessed.
3. Could this affect a small business?
Small businesses, charities, clubs, and similar organisations using Windows, Microsoft Office, or Teams could be affected, especially if they receive shortcut files from unknown or untrusted sources. Organisations not using these Microsoft products or not opening such files are less likely to be affected.
4. What to do now
- Ask your IT provider if your systems have been patched against CVE-2025-33053.
- Avoid opening internet shortcut files from unknown or unexpected sources.
- Ensure your antivirus and security software are up to date and actively scanning.
- Educate staff about the risks of opening unexpected files and encourage cautious behaviour.
5. Ask your IT provider
Can you confirm that our Windows and Microsoft Office systems are protected against the CVE-2025-33053 vulnerability involving internet shortcut files?
6. Bottom line
Promptly check and apply security updates to protect your organisation from this serious remote code execution risk.
Information based on CISA KEV, NVD, and reputable security reporting.