Exploitation evidence
Known exploited · CISA KEV listed
Added 2023-11-16. Ransomware campaign use: Unknown.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: 2023-12-07. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Oracle Corporation / WebLogic Server
Default status: Not specified
- affected: 10.3.6.0.0
- affected: 12.1.3.0.0
- affected: 12.2.1.3.0
- affected: 12.2.1.4.0
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.92817,
"percentile": 0.99832
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.92817,
"percentile": 0.99831
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.92817,
"percentile": 0.9983
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.92817,
"percentile": 0.9983
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.92817,
"percentile": 0.9983
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.92817,
"percentile": 0.9983
}06 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
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"dateUpdated": "2024-08-04T07:09:54.669Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2020-2551",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-30T17:03:46.051357Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2023-11-16",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2551"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-noinfo Not enough information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-12T21:12:03.126Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2551"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "WebLogic Server",
"vendor": "Oracle Corporation",
"versions": [
{
"status": "affected",
"version": "10.3.6.0.0"
},
{
"status": "affected",
"version": "12.1.3.0.0"
},
{
"status": "affected",
"version": "12.2.1.3.0"
},
{
"status": "affected",
"version": "12.2.1.4.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-01-15T16:34:00.000Z",
"orgId": "43595867-4340-4103-b7a2-9a5208d29a85",
"shortName": "oracle"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secalert_us@oracle.com",
"ID": "CVE-2020-2551",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "WebLogic Server",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "10.3.6.0.0"
},
{
"version_affected": "=",
"version_value": "12.1.3.0.0"
},
{
"version_affected": "=",
"version_value": "12.2.1.3.0"
},
{
"version_affected": "=",
"version_value": "12.2.1.4.0"
}
]
}
}
]
},
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]
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},
"data_format": "MITRE",
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"description": {
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{
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"value": "Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)."
}
]
},
"impact": {
"cvss": {
"baseScore": "9.8",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server."
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.oracle.com/security-alerts/cpujan2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
"assignerShortName": "oracle",
"cveId": "CVE-2020-2551",
"datePublished": "2020-01-15T16:34:00.000Z",
"dateReserved": "2019-12-10T00:00:00.000Z",
"dateUpdated": "2026-01-12T21:12:03.126Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}05 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.92817,
"percentile": 0.9983
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.92817,
"percentile": 0.9983
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.92817,
"percentile": 0.9983
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.92817,
"percentile": 0.99829
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2020-2551",
"cwes": [],
"dateAdded": "2023-11-16",
"dueDate": "2023-12-07",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://www.oracle.com/security-alerts/cpujan2020.html; https://nvd.nist.gov/vuln/detail/CVE-2020-2551",
"product": "Fusion Middleware",
"requiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Oracle Fusion Middleware contains an unspecified vulnerability in the WLS Core Components that allows an unauthenticated attacker with network access via IIOP to compromise the WebLogic Server.",
"vendorProject": "Oracle",
"vulnerabilityName": "Oracle Fusion Middleware Unspecified Vulnerability"
}