A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connectin…
cve CVE-2026-23927 1 source, 1 claim · Watch
NVD writes:
A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session. the claim
A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session. the claim
- Severity
- MEDIUM NVD
- CVSS
- 6.5 NVD
- Vendor
- Zabbix NVD
- Product
- Zabbix NVD
- CWE
- CWE-522 NVD
How far exploitation has got
- No public code known
- Proof of concept
- Proof of concept, verified
- A Metasploit module
- Exploited in the wild
- Used in ransomware campaigns
Timeline
| 2026-05-06 | first spoke of it: A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session. | NVD |
A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.
What it is to other things
| affects | zabbix/zabbix NVD |
| made_by | zabbix NVD |
Every value, with what each source said and its receipt
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Automatable automatable | NVD | no At least one of those steps needs a person. receipt
What the source handed over{
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| CVSS cvss | NVD | 6.5receipt
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| Cvss4 cvss4 | NVD | 5.1receipt
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| Cvss4 vector cvss4_vector | NVD | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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:Xreceipt
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| CWE cwe | NVD | CWE-522receipt
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} | — | ||||
| Exploitation exploitation | NVD | none No evidence of exploitation, and no public proof of concept. receipt
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| Product product | NVD | Zabbixreceipt
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| Severity severity | NVD | MEDIUM From 4.0 to 6.9. receipt
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| Status status | NVD | Analyzedreceipt
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| Technical impact technical_impact | NVD | partial The attacker gains limited control, or limited information. receipt
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"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security@zabbix.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23927",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-06T13:00:05.597736Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-06T08:16:02.940",
"references": [
{
"source": "security@zabbix.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.zabbix.com/browse/ZBX-27759"
}
],
"sourceIdentifier": "security@zabbix.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "security@zabbix.com",
"type": "Secondary"
}
]
}
} | — | ||||
| Vendor vendor | NVD | Zabbixreceipt
What the source handed over{
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"modules": [
"Agent2"
],
"product": "Zabbix",
"repo": "https://git.zabbix.com/",
"vendor": "Zabbix",
"versions": [
{
"changes": [
{
"at": "6.0.45",
"status": "unaffected"
}
],
"lessThanOrEqual": "6.0.44",
"status": "affected",
"version": "6.0.0",
"versionType": "git"
},
{
"changes": [
{
"at": "7.0.24",
"status": "unaffected"
}
],
"lessThanOrEqual": "7.0.23",
"status": "affected",
"version": "7.0.0",
"versionType": "git"
},
{
"changes": [
{
"at": "7.4.8",
"status": "unaffected"
}
],
"lessThanOrEqual": "7.4.7",
"status": "affected",
"version": "7.4.0",
"versionType": "git"
}
]
}
],
"source": "security@zabbix.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1E7AE210-21FF-41EE-8130-339B9541C3D7",
"versionEndExcluding": "6.0.45",
"versionStartIncluding": "6.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
"matchCriteriaId": "44821417-4549-40BA-95DB-79C174EB9D5A",
"versionEndExcluding": "7.0.24",
"versionStartIncluding": "7.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
"matchCriteriaId": "05916880-BA46-450D-A180-40D10B2C27C5",
"versionEndExcluding": "7.4.8",
"versionStartIncluding": "7.4.0",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session."
}
],
"id": "CVE-2026-23927",
"lastModified": "2026-09-18T15:26:56.730",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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",
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"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security@zabbix.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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{
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},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-06T13:00:05.597736Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-06T08:16:02.940",
"references": [
{
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"tags": [
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],
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}
],
"sourceIdentifier": "security@zabbix.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "security@zabbix.com",
"type": "Secondary"
}
]
}
} | — |
Every claim, by kind
vulnerability
| A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session. zetlyn/cve-nvd · 2026-05-06 | automatable no cvss 6.5 cvss4 5.1 cvss4_vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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 cvss_vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N cwe CWE-522 exploitation none product Zabbix severity MEDIUM status Analyzed technical_impact partial vendor Zabbix | source |