US EditionMicrosoft Teams flaw could allow message tampering, spoofing
Check Point found four vulnerabilities in Microsoft Teams that risked message integrity and caller identity for over 320 million users before final patches in October 2025.
- On Tuesday, Check Point Research released a report disclosing four serious vulnerabilities in Microsoft Teams that could fundamentally break trust inside organizations.
- Check Point researchers said four vulnerabilities required deep fixes, while Microsoft tracked CVE-2024-38197 and issued guidance last year, resolving related flaws in October.
- Researchers found attackers could edit Teams messages without a message 'edited' label, manipulate notification parameters, change display names via a hidden 'conversation topic' field, and forge caller IDs in audio/video calls.
- The firm warned and recommended adopting layered defences including zero-trust access controls, data-loss prevention, and anomaly detection to guard against manipulation inside collaboration apps, despite Microsoft classifying the issue as medium severity.
- With more than 320 million monthly users relying on Teams, Vanunu warned `These vulnerabilities hit at the heart of digital trust`, underscoring the platform's critical role and exposure.
11 Articles
11 Articles
Microsoft patched the vulnerabilities after Check Point reported them. Collaboration platforms like Teams are now a key target for cybercrime, the security firm says.
Check Point Research has identified vulnerabilities in Microsoft teams that allow attackers to handle a wide range of dangerous scams and imitation techniques. In a recent research report, Check Point Software Technologies' IT forensics show how attackers can unnoticed edit messages, fake notifications, fake caller identities, and output as executives in the well-known collaboration tool.
Instead of the usual pishing e-mail, workplace apps such as Microsoft teams in companies could become the gateway for attackers in the future. Security researchers show that this is not a theory. read more on t3n.de
Coverage Details
Bias Distribution
- 100% of the sources are Center
Factuality
To view factuality data please Upgrade to Premium
