CVE-2025-71275
Zimbra Collaboration Suite PostJournal 8.8.15 Unauthenticated Remote Code Execution via SMTP Injection
Description
Zimbra Collaboration Suite (ZCS) PostJournal service version 8.8.15 contains a command injection vulnerability that allows unauthenticated attackers to execute arbitrary system commands by exploiting improper sanitization of the RCPT TO parameter via SMTP injection. Attackers can inject shell expansion syntax through the RCPT TO parameter to achieve remote code execution under the Zimbra service context.
INFO
Published Date :
March 24, 2026, 4:16 p.m.
Last Modified :
March 24, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-71275
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Zimbra Collaboration Suite to a patched version.
- Restrict or validate RCPT TO parameter input.
- Monitor SMTP traffic for suspicious commands.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-71275.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-71275 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-71275
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-71275 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-71275 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Mar. 24, 2026
Action Type Old Value New Value Added Description Zimbra Collaboration Suite (ZCS) PostJournal service version 8.8.15 contains a command injection vulnerability that allows unauthenticated attackers to execute arbitrary system commands by exploiting improper sanitization of the RCPT TO parameter via SMTP injection. Attackers can inject shell expansion syntax through the RCPT TO parameter to achieve remote code execution under the Zimbra service context. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added Reference https://packetstorm.news/files/id/212108/ Added Reference https://www.vulncheck.com/advisories/zimbra-collaboration-suite-postjournal-unauthenticated-remote-code-execution-via-smtp-injection Added Reference https://www.zimbra.com/