CVE-2026-85040 Details
Description
A weakness has been identified in ZhongBangKeJi CRMEB up to 6.0.0. Affected by this vulnerability is the function eval of the file /adminapi/system/crontab/save of the component Custom Scheduled Task Feature. This manipulation of the argument customCode causes os command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Vendor documents this as deliberate debug-only behavior. But isSafePhpCode blacklist offers no real RCE containment.
A command injection vulnerability has been identified in ZhongBangKeJi CRMEB versions through 6.0.0. The issue arises in the custom scheduled task feature, specifically within the 'eval' function of the file '/adminapi/system/crontab/save'. The vulnerability allows for remote code execution by injecting malicious code into the 'customCode' argument, which is then executed on the server. Although the vendor claims this behavior is intended for debugging purposes, the existing safeguards do not effectively prevent remote code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 3, 2026CISA-ADP
Assessed Sep 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xiaohai12138-1/cve/blob/main/CRMEB/CRMEB%20Backend%20custom%20%20scheduled%20task%20functionality%20%20RCE.md | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-85040 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/887316 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/398300 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/398300/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ZhongBangKeJi CRMEB | <= 6.0.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 3, 2026 | CVE Modified | CISA-ADP |
| Sep 3, 2026 | New CVE Received | [email protected] |