Vulnerability details
CVE-2026-73570
Actively exploited
Zimbra Collaboration
CVSS 3.1
8.9High
Official description
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.9High | 3.1 | CVEProject cvelistV5 (CNA) (mitre) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Zimbra | Collaboration | v < 10.1.20 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://wiki.zimbra.com/wiki/Security_Center
- https://moje.cert.pl/komunikaty/2026/145/aktywnie-wykorzystywana-podatnosc-w-zimbra-collaboration-suite/ third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-73570 government-resource
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Details
- Published
- 2026-08-13
- Last updated
- 2026-08-24
- State
- Published
- Assigner (CNA)
- mitre
- Kolun priority
- 88 · Critical
CISA KEV catalog
- Date added
- 2026-08-21
- Due date
- 2026-08-24
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
76.61%
Probability of exploitation in 30 days
99.5%
Percentile (among all CVEs)
- 2026-11-0876.61%
- 2026-11-0371.66%
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')