CVE-2021-20540
Status: ModifiedMedium (5.3)—
IBM Cloud Pak for Security (CP4S) 1.5.0.0, 1.5.1.0, 1.6.0.0, 1.6.1.0, 1.7.0.0, and 1.7.1.0 could disclose sensitive information to an unauthorized user through HTTP GET requests. This information could be used in further attacks against the system. IBM X-Force ID: 198923.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Base score: 5.3
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.91%
- Percentile among all scored CVEs: 59
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- NVD-CWE-noinfo
References
Raw JSON (NVD)
Show
{
"id": "CVE-2021-20540",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "psirt@us.ibm.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 2.7,
"attackVector": "NETWORK",
"baseSeverity": "LOW",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 1.2
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.3,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 1.4,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "psirt@us.ibm.com",
"affectedData": [
{
"vendor": "IBM",
"product": "Cloud Pak for Security",
"versions": [
{
"status": "affected",
"version": "1.6.0.0"
},
{
"status": "affected",
"version": "1.5.0.1"
},
{
"status": "affected",
"version": "1.5.0.0"
},
{
"status": "affected",
"version": "1.6.0.1"
},
{
"status": "affected",
"version": "1.7.0.0"
},
{
"status": "affected",
"version": "1.7.1.0"
}
]
}
]
}
],
"published": "2021-08-02T17:15:13.497",
"references": [
{
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/198923",
"tags": [
"VDB Entry"
],
"source": "psirt@us.ibm.com"
},
{
"url": "https://www.ibm.com/support/pages/node/6476940",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "psirt@us.ibm.com"
},
{
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/198923",
"tags": [
"VDB Entry"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.ibm.com/support/pages/node/6476940",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "IBM Cloud Pak for Security (CP4S) 1.5.0.0, 1.5.1.0, 1.6.0.0, 1.6.1.0, 1.7.0.0, and 1.7.1.0 could disclose sensitive information to an unauthorized user through HTTP GET requests. This information could be used in further attacks against the system. IBM X-Force ID: 198923."
},
{
"lang": "es",
"value": "IBM Cloud Pak for Security (CP4S) versiones 1.5.0.0, 1.5.1.0, 1.6.0.0, 1.6.1.0, 1.7.0.0 y 1.7.1.0, podría divulgar información confidencial a un usuario no autorizado mediante peticiones HTTP GET. Esta información podría usarse en otros ataques contra el sistema. IBM X-Force ID: 198923"
}
],
"lastModified": "2026-06-17T03:33:59.650",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ibm:cloud_pak_for_security:1.5.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "43F0280B-81B4-49A1-BE7E-D8476C20E041"
},
{
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"matchCriteriaId": "ACC07468-AC42-41E7-B255-418144A1197E"
},
{
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"vulnerable": true,
"matchCriteriaId": "29021B22-B70A-4278-AB13-92794BB260C4"
},
{
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"vulnerable": true,
"matchCriteriaId": "C4B52E14-2370-4201-8E0D-4225C12E28A5"
},
{
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"vulnerable": true,
"matchCriteriaId": "BE236FAA-CBC7-49D6-934B-55CA67F0AE95"
},
{
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"vulnerable": true,
"matchCriteriaId": "F15C8979-996E-44AE-BDF9-98BA5F1B3C41"
}
],
"operator": "OR"
}
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}
],
"sourceIdentifier": "psirt@us.ibm.com"
}