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Wire · technology

Critical Zimbra RCE flaw now actively exploited in attacks

20 August 2026 · By · Wire by Fusion42

Published

20 August 2026

Topic

technology

◆ Sectors

Cybersecurity

◆ Source

Read at bleepingcomputer.com →

◆ Verified

Fusion42 · 20 August 2026 · Fusion42 review

A critical remote code execution (RCE) vulnerability in Zimbra, a popular email and collaboration platform, is being actively exploited by attackers, posing significant security risks to affected organisations.

This Wire brief sits within Fusion42's coverage of Cybersecurity, and 2 sources have reported it between 20 Aug 2026 and 24 Aug 2026.

◆ ◆ The Wire takeaway

You face heightened urgency to patch or mitigate this Zimbra flaw immediately or risk compromise. Your security tools and incident response must be ready for attacks exploiting this vulnerability.

◆ Coverage

2 sources · first reported 20 Aug 2026 · latest 24 Aug 2026

◆ Related on Wire

◆ Topics

Cybersecurityzimbrarcesecurity-flawactive-exploitationvulnerability