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vuln-cve/data/2021/3xxx/CVE-2021-3426.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"state": "PUBLISHED",
"cveId": "CVE-2021-3426",
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"dateUpdated": "2026-10-14T09:49:37.022Z",
"dateReserved": "2021-03-09T00:00:00.000Z",
"datePublished": "2021-05-20T00:00:00.000Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat",
"dateUpdated": "2023-06-30T00:00:00.000Z"
},
"descriptions": [
{
"lang": "en",
"value": "There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7."
}
],
"affected": [
{
"vendor": "n/a",
"product": "python",
"versions": [
{
"version": "python 3.8.9, python 3.9.3, python 3.10.0a7",
"status": "affected"
}
]
}
],
"references": [
{
"name": "[debian-lts-announce] 20210405 [SECURITY] [DLA 2619-1] python3.5 security update",
"tags": [
"mailing-list"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html"
},
{
"name": "FEDORA-2021-a311bf10d4",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25HVHLBGO2KNPXJ3G426QEYSSCECJDU5/"
},
{
"name": "FEDORA-2021-2ab6f060d9",
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"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPX7Y5GQDNB4FJTREWONGC4ZSVH7TGHF/"
},
{
"name": "FEDORA-2021-1769a23935",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQYPUKLLBOZMKFPO7RD7CENTXHUUEUV7/"
},
{
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"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/"
},
{
"name": "FEDORA-2021-067c9deff1",
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"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNGAFMPIYIVJ47FCF2NK2PIX22HUG35B/"
},
{
"name": "FEDORA-2021-0a8f3ffbc0",
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"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BF2K7HEWADHN6P52R3QLIOX27U3DJ4HI/"
},
{
"name": "FEDORA-2021-a26257ccf5",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LM5V4VPLBHBEASSAROYPSHXGXGGPHNOE/"
},
{
"name": "GLSA-202104-04",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202104-04"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1935913"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"url": "https://security.netapp.com/advisory/ntap-20210629-0003/"
},
{
"url": "https://www.oracle.com/security-alerts/cpujan2022.html"
},
{
"name": "[debian-lts-announce] 20230630 [SECURITY] [DLA 3477-1] python3.7 security update",
"tags": [
"mailing-list"
],
"url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html"
}
],
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"lang": "en",
"description": "CWE-200",
"cweId": "CWE-200"
}
]
}
]
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"name": "[debian-lts-announce] 20210405 [SECURITY] [DLA 2619-1] python3.5 security update",
"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html"
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25HVHLBGO2KNPXJ3G426QEYSSCECJDU5/"
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPX7Y5GQDNB4FJTREWONGC4ZSVH7TGHF/"
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{
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{
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNGAFMPIYIVJ47FCF2NK2PIX22HUG35B/"
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BF2K7HEWADHN6P52R3QLIOX27U3DJ4HI/"
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LM5V4VPLBHBEASSAROYPSHXGXGGPHNOE/"
},
{
"name": "GLSA-202104-04",
"tags": [
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],
"url": "https://security.gentoo.org/glsa/202104-04"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1935913",
"tags": [
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{
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"tags": [
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{
"url": "https://security.netapp.com/advisory/ntap-20210629-0003/",
"tags": [
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{
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"tags": [
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]
},
{
"name": "[debian-lts-announce] 20230630 [SECURITY] [DLA 3477-1] python3.7 security update",
"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T21:44:51.975Z"
}
},
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.7,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2025-12-18T11:45:51.350788Z",
"id": "CVE-2021-3426",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2025-12-18T11:45:56.551Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-14T09:49:37.022Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"versions": [
{
"status": "affected",
"version": "V3.1.0",
"lessThan": "V3.1.5",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
"versions": [
{
"status": "affected",
"version": "V3.1.0",
"lessThan": "V3.1.5",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"versions": [
{
"status": "affected",
"version": "V3.1.0",
"lessThan": "V3.1.5",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
"versions": [
{
"status": "affected",
"version": "V3.1.0",
"lessThan": "V3.1.5",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
"versions": [
{
"status": "affected",
"version": "V3.1.0",
"lessThan": "V3.1.5",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
}
]
}
]
}
}
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