Command Injection Vulnerability in Zimbra Collaboration Suite by Zimbra
CVE-2025-71275

9.3CRITICAL

Key Information:

Vendor

Zimbra

Status
Zimbra Collaboration Suite
Vendor
CVE Published:
24 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-71275?

The Zimbra Collaboration Suite (ZCS) version 8.8.15 has a command injection vulnerability in the PostJournal service. This flaw allows unauthenticated attackers to execute arbitrary system commands through improper sanitization of the RCPT TO parameter, which can be exploited via SMTP injection. The vulnerability permits attackers to leverage shell expansion syntax to execute remote code within the Zimbra service context, posing significant risks to affected systems.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

Zimbra Collaboration Suite 8.8.15

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-71275 - Proof of Concept

References

https://packetstorm.news/files/id/212108/
exploit
https://www.zimbra.com/
product
https://www.vulncheck.com/advisories/zimbra-collaboration...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

indoushka
JSON
.