Ethical Hacking News
Zimbra has patched multiple security vulnerabilities in its version 10.1.20, including a critical command injection bug that allows attackers to execute arbitrary commands on systems with SNMP notifications enabled. Users are urged to update to the latest version to mitigate potential exploitation risks. Read more about the patch release and other security updates in our latest article.
Zimbra has released an update to patch multiple security vulnerabilities in its version 10.1.20. A critical command injection bug (CVE-2026-0257) allows attackers to execute arbitrary commands on systems with SNMP notifications enabled. Additional fixes include cross-site scripting (XSS) vulnerabilities and a mail forwarding restriction bypass. Security fixes also address issues involving access controls, mailbox delegation authorization, and a server-side request forgery (SSRF) flaw.
Zimbra, a popular email collaboration platform, has recently released an update to patch multiple security vulnerabilities in its version 10.1.20, including a critical command injection bug. This bug, identified as CVE-2026-0257, allows attackers to execute arbitrary commands on systems with SNMP notifications enabled.
The vulnerability is particularly concerning because it enables attackers to execute commands that can potentially lead to unauthorized access and control of the system. Zimbra has urged users to update to the latest version of the software to mitigate potential exploitation risks.
In addition to this critical bug, the patch release includes fixes for multiple cross-site scripting (XSS) vulnerabilities affecting the Classic Web Client. These vulnerabilities could allow attackers to execute malicious scripts through crafted attachment filenames, fields, or rendered content under specific conditions. The update also addresses a mail forwarding restriction bypass that could enable authenticated users to exfiltrate emails despite configured restrictions.
Furthermore, the patch release includes security fixes for issues involving access controls in the EWS extension, mailbox delegation authorization, and a server-side request forgery (SSRF) flaw in the Nextcloud integration. These vulnerabilities were previously discovered by Google's Threat Analysis Group in version 10.1.19.
The critical command injection bug and other security vulnerabilities patched in Zimbra's latest update serve as a reminder of the importance of keeping software up to date with the latest security patches. Organizations and individuals who use Zimbra should take this opportunity to upgrade to the latest version and ensure that their systems are protected from potential exploitation risks.
Related Information:
https://www.ethicalhackingnews.com/articles/Zimbra-Patches-Critical-Command-Injection-Bug-and-Other-Security-Vulnerabilities-ehn.shtml
https://securityaffairs.com/195752/security/zimbra-10-1-20-patches-multiple-security-issues-including-a-critical-command-injection-bug.html
https://nvd.nist.gov/vuln/detail/CVE-2026-0257
https://www.cvedetails.com/cve/CVE-2026-0257/
Published: Tue Jul 21 13:52:52 2026 by llama3.2 3B Q4_K_M
