25 September 2026
Reference: CVE-2022-37042
1. What is being reported?
The vulnerability involves a part of Zimbra email software that handles importing files. Attackers can bypass normal login checks and upload harmful files, potentially gaining full control of the system. This issue is due to an incomplete fix of a previous problem.
2. What this means in plain English
If your organisation uses Zimbra for email, this flaw could let attackers break in remotely without your knowledge. They might steal sensitive information, disrupt your email service, or use your system to attack others.
3. Could this affect a small business?
Small businesses or charities using Zimbra Collaboration Suite versions 8.8.15 or 9.0 could be at risk. If you use other email software, this vulnerability does not apply. Check with your IT provider if you are unsure which software you use.
4. What to do now
- Contact your IT provider or software supplier immediately to confirm if your Zimbra software is affected.
- Apply any available security updates or patches for Zimbra Collaboration Suite as soon as possible.
- If patches are not yet available, consider temporarily disabling the file import feature or restricting access to the Zimbra server.
- Monitor your email system for unusual activity and review access logs regularly.
5. Ask your IT provider
Can you confirm if our Zimbra Collaboration Suite email system is affected by CVE-2022-37042, and what steps are being taken to protect us?
6. Bottom line
If you use Zimbra email software, act quickly to check and secure your system against this critical vulnerability.
Information based on CISA KEV, NVD, and reputable security reporting.