Search
Find a vulnerability
Search criteria
2 vulnerabilities found for Mass Service Engine in Cluster (MSEC) by Tencent
CVE-2026-89040 (GCVE-0-2026-89040)
Vulnerability from nvd – Published: 2026-09-15 20:05 – Updated: 2026-09-22 16:22 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Tencent Mass Service Engine in Cluster (MSEC) path traversal
Summary
Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-08-25 15:35 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Tencent/MSEC | product |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-89040 | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Tencent | Mass Service Engine in Cluster (MSEC) |
Affected:
0 , < *
(custom)
|
Date Public
2026-09-15 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-89040",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-22T16:22:29.446485Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-22T16:22:37.341Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Mass Service Engine in Cluster (MSEC)",
"vendor": "Tencent",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Renatto Cecot Sommerer"
}
],
"datePublic": "2026-09-15T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
},
{
"other": {
"content": {
"id": "CVE-2026-89040",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-25T15:35:51.155854Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T20:05:07.497Z",
"orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"shortName": "cisa-cg"
},
"references": [
{
"name": "url",
"tags": [
"product"
],
"url": "https://github.com/Tencent/MSEC"
},
{
"name": "url",
"tags": [
"third-party-advisory"
],
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-258-02.json"
},
{
"name": "url",
"tags": [
"vdb-entry"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-89040"
}
],
"tags": [
"unsupported-when-assigned"
],
"title": "Tencent Mass Service Engine in Cluster (MSEC) path traversal"
}
},
"cveMetadata": {
"assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"assignerShortName": "cisa-cg",
"cveId": "CVE-2026-89040",
"datePublished": "2026-09-15T20:05:07.497Z",
"dateReserved": "2026-09-10T16:43:38.518Z",
"dateUpdated": "2026-09-22T16:22:37.341Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-89040 (GCVE-0-2026-89040)
Vulnerability from cvelistv5 – Published: 2026-09-15 20:05 – Updated: 2026-09-22 16:22 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Tencent Mass Service Engine in Cluster (MSEC) path traversal
Summary
Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-08-25 15:35 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Tencent/MSEC | product |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-89040 | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Tencent | Mass Service Engine in Cluster (MSEC) |
Affected:
0 , < *
(custom)
|
Date Public
2026-09-15 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-89040",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-22T16:22:29.446485Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-22T16:22:37.341Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Mass Service Engine in Cluster (MSEC)",
"vendor": "Tencent",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Renatto Cecot Sommerer"
}
],
"datePublic": "2026-09-15T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
},
{
"other": {
"content": {
"id": "CVE-2026-89040",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-25T15:35:51.155854Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T20:05:07.497Z",
"orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"shortName": "cisa-cg"
},
"references": [
{
"name": "url",
"tags": [
"product"
],
"url": "https://github.com/Tencent/MSEC"
},
{
"name": "url",
"tags": [
"third-party-advisory"
],
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-258-02.json"
},
{
"name": "url",
"tags": [
"vdb-entry"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-89040"
}
],
"tags": [
"unsupported-when-assigned"
],
"title": "Tencent Mass Service Engine in Cluster (MSEC) path traversal"
}
},
"cveMetadata": {
"assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"assignerShortName": "cisa-cg",
"cveId": "CVE-2026-89040",
"datePublished": "2026-09-15T20:05:07.497Z",
"dateReserved": "2026-09-10T16:43:38.518Z",
"dateUpdated": "2026-09-22T16:22:37.341Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}