CVE-2024-45519Synacor Zimbra Collaboration Suite (ZCS) Command Execution Vulnerability

The postjournal service in Zimbra Collaboration (ZCS) before 8.8.15 Patch 46, 9 before 9.0.0 Patch 41, 10 before 10.0.9, and 10.1 before 10.1.1 sometimes allows unauthenticated users to execute commands.

10.0 CRITICALEPSS 99.90%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 07:54 UTC

OverviewCVSS details

10.0CRITICALCVSS 3.1

Score source: mitre (CNA)
NVD status: Analyzed
Published: Oct 2, 2024
Assigner: mitre

Affected

zimbra collaboration suite (synacor)

Versions: before 8.8.15 · 10.0.0 before 10.0.9
Fixed in: 8.8.15, 10.0.9

All affected versions →

Exploitation

Public exploit: Yes · 1 reference
CISA KEV: Listed · Oct 3, 2024
KEV due date: Oct 24, 2024
Ransomware use: Unknown
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 8

99.90%chance of exploitation in 30 days

Higher than 99.96% of CVEs

CVSS 3.1 · mitre (CNA)

10.0Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · mitre (CNA)

10.0Critical

CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N

Attack complexity: Low
Attack vector: Network
Availability impact: High
Confidentiality impact: High
Integrity impact: High
Privileges required: None
Scope: Changed
User interaction: None

CVSS 3.1 · NVD

9.8Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
10.0	CRITICAL	3.1mitre (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0	CRITICAL	3.1mitre (CNA)	CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:N
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA required action

⚡ Known exploited · remediation due Oct 24, 2024

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Details

CVE ID: CVE-2024-45519
Status: Analyzed
Assigner (CNA): mitre
Published: Oct 2, 2024
Last modified: 2026-06-17 07:54 UTC
Weaknesses: CWE-78
CWE-284

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 13:15 UTC.