Security News > 2022 > September > New Microsoft Exchange zero-days reportedly exploited in attacks
Threat actors are exploiting yet-to-be-disclosed Microsoft Exchange zero-day bugs allowing for remote code execution, according to claims made by security researchers at Vietnamese cybersecurity outfit GTSC, who first spotted and reported the attacks.
Microsoft hasn't disclosed any information regarding the two security flaws so far and is yet to assign a CVE ID to track them.
The researchers reported the security vulnerabilities to Microsoft privately three weeks ago through the Zero Day Initiative, which tracks them as ZDI-CAN-18333 and ZDI-CAN-18802 after its analysts validated the issues.
"GTSC submitted the vulnerability to the Zero Day Initiative right away to work with Microsoft so that a patch could be prepared as soon as possible," they added.
There's reports emerging that a new zero day exists in Microsoft Exchange, and is being actively exploited in the wild.
"We recommend all organizations/enterprises around the world that are using Microsoft Exchange Server to check, review, and apply the above temporary remedy as soon as possible to avoid potential serious damages," GTSC added.
News URL
Related news
- New ClickFix attack deploys Havoc C2 via Microsoft Sharepoint (source)
- Broadcom fixes three VMware zero-days exploited in attacks (source)
- Microsoft March 2025 Patch Tuesday fixes 7 zero-days, 57 flaws (source)
- Apple fixes WebKit zero-day exploited in ‘extremely sophisticated’ attacks (source)
- Apple Releases Patch for WebKit Zero-Day Vulnerability Exploited in Targeted Attacks (source)
- URGENT: Microsoft Patches 57 Security Flaws, Including 6 Actively Exploited Zero-Days (source)
- Microsoft patches Windows Kernel zero-day exploited since 2023 (source)
- Patch Tuesday: Microsoft Fixes 57 Security Flaws – Including Active Zero-Days (source)
- Microsoft Exchange Online outage affects Outlook web users (source)
- Microsoft: Exchange Online bug mistakenly quarantines user emails (source)