Action not permitted
Modal body text goes here.
Modal Title
Modal Body
EUVD-2026-232088
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 06:53
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T06:53:32.157540+00:00",
"id": "EUVD-2026-232088"
}
CVE-2021-40368 (GCVE-0-2021-40368)
Vulnerability from cvelistv5 – Published: 2022-04-12 09:07 – Updated: 2025-04-21 13:54
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.
This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-18 15:12 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
1 reference
Impacted products
20 products
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T02:44:09.608Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-40368",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-18T15:12:26.532560Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-21T13:54:27.056Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 412-1 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 412-2 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 412-2 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 414-2 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 414-3 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 414-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 414F-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 416-2 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 416-3 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 416-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 416F-2 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 416F-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": " SIMATIC S7-400 CPU 417-4 DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V6.0.10"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants)",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V10.1"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V8.2.3"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-400 CPU 414-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-400 CPU 416-3 PN/DP V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions \u003c V7.0.3"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-400 CPU 416-3 V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIPLUS S7-400 CPU 417-4 V7",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions \u003c V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions \u003c V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions \u003c V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions \u003c V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions \u003c V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions \u003c V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.\n\nThis could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-04-11T09:02:03.176Z",
"orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
"shortName": "siemens"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
"assignerShortName": "siemens",
"cveId": "CVE-2021-40368",
"datePublished": "2022-04-12T09:07:23.000Z",
"dateReserved": "2021-09-01T00:00:00.000Z",
"dateUpdated": "2025-04-21T13:54:27.056Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…
Loading…