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WID-SEC-W-2026-0041
Vulnerability from csaf_certbund - Published: 2026-01-07 23:00 - Updated: 2026-01-28 23:00Summary
Cisco Firewall Threat Defense, IOS XE und Meraki MX: Mehrere Schwachstellen
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung
Snort ist ein freies Network Intrusion Prevention System (NIPS) und ein Network Intrusion Detection System (NIDS) der Firma Sourcefire.
Cisco Secure Firewall Threat Defense ist eine Sicherheitslösung, die Funktionen wie Firewall, Intrusion Prevention und erweiterten Malware-Schutz in einer einzigen Appliance integriert.
Cisco Internetwork Operating System (IOS) ist ein Betriebssystem, das für Cisco Geräte wie z. B. Router und Switches eingesetzt wird.
Angriff
Ein Angreifer kann mehrere Schwachstellen in Snort, Cisco Secure Firewall Threat Defense und Cisco IOS XE ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.
Betroffene Betriebssysteme
- Linux
- Sonstiges
- UNIX
- Windows
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"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Snort ist ein freies Network Intrusion Prevention System (NIPS) und ein Network Intrusion Detection System (NIDS) der Firma Sourcefire.\r\nCisco Secure Firewall Threat Defense ist eine Sicherheitsl\u00f6sung, die Funktionen wie Firewall, Intrusion Prevention und erweiterten Malware-Schutz in einer einzigen Appliance integriert.\r\nCisco Internetwork Operating System (IOS) ist ein Betriebssystem, das f\u00fcr Cisco Ger\u00e4te wie z. B. Router und Switches eingesetzt wird.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein Angreifer kann mehrere Schwachstellen in Snort, Cisco Secure Firewall Threat Defense und Cisco IOS XE ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren, und um Informationen offenzulegen.",
"title": "Angriff"
},
{
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"text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
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"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
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},
{
"category": "self",
"summary": "WID-SEC-2026-0041 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0041"
},
{
"category": "external",
"summary": "Cisco Security Advisory vom 2026-01-07",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-dcerpc-vulns-J9HNF4tH"
}
],
"source_lang": "en-US",
"title": "Cisco Firewall Threat Defense, IOS XE und Meraki MX: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2026-01-28T23:00:00.000+00:00",
"generator": {
"date": "2026-01-29T07:55:59.243+00:00",
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"id": "WID-SEC-W-2026-0041",
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"revision_history": [
{
"date": "2026-01-07T23:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-01-28T23:00:00.000+00:00",
"number": "2",
"summary": "Referenz(en) aufgenommen: ZDI-26-045, ZDI-CAN-27893, ZDI-26-046, ZDI-CAN-27892"
}
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"product": {
"name": "Cisco IOS XE \u003c26.1.1",
"product_id": "T049777"
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},
{
"category": "product_version",
"name": "26.1.1",
"product": {
"name": "Cisco IOS XE 26.1.1",
"product_id": "T049777-fixed",
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}
],
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},
{
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"name": "Cisco Meraki MX",
"product": {
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"product_id": "T049783",
"product_identification_helper": {
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},
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},
{
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"name": "\u003c7.0.8.2 Hotfix",
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{
"branches": [
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"category": "product_version_range",
"name": "\u003c3.9.6.0",
"product": {
"name": "Open Source Snort \u003c3.9.6.0",
"product_id": "T049774"
}
},
{
"category": "product_version",
"name": "3.9.6.0",
"product": {
"name": "Open Source Snort 3.9.6.0",
"product_id": "T049774-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:snort:snort:3.9.6.0"
}
}
}
],
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"name": "Snort"
}
],
"category": "vendor",
"name": "Open Source"
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},
"vulnerabilities": [
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"cve": "CVE-2026-20026",
"product_status": {
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},
"release_date": "2026-01-07T23:00:00.000+00:00",
"title": "CVE-2026-20026"
},
{
"cve": "CVE-2026-20027",
"product_status": {
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"title": "CVE-2026-20027"
}
]
}
CVE-2026-20027 (GCVE-0-2026-20027)
Vulnerability from cvelistv5 – Published: 2026-01-07 16:23 – Updated: 2026-01-07 16:51
VLAI?
EPSS
Title
Cisco Snort DCERPC Stub Data Out of Bounds Read
Summary
Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection.
This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer out-of-bounds read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A successful exploit could allow the attacker to obtain sensitive information in the Snort 3 data stream.
Severity ?
5.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.1.0 Affected: 7.0.1.1 Affected: 7.1.0.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.1.0.2 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.1.0.3 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 |
|||||||
|
|||||||||
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
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{
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{
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{
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{
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{
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{
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{
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"version": "Fuji-16.9.7"
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"version": "17.3.4a"
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"version": "17.4.2"
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"version": "17.4.1b"
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{
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{
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"version": "16.12.6"
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{
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"version": "Fuji-16.9.8"
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"version": "16.12.7"
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{
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"version": "17.7.2"
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{
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"version": "17.9.1a"
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"version": "17.6.4"
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"version": "17.10.1a"
},
{
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},
{
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"version": "16.12.8"
},
{
"status": "affected",
"version": "17.3.7"
},
{
"status": "affected",
"version": "17.9.2a"
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{
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"version": "17.6.5"
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{
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"version": "17.11.1a"
},
{
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{
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{
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{
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{
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"version": "17.3.8"
},
{
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"version": "17.3.8a"
},
{
"status": "affected",
"version": "17.6.6a"
},
{
"status": "affected",
"version": "17.9.4a"
},
{
"status": "affected",
"version": "17.12.2"
},
{
"status": "affected",
"version": "17.13.1a"
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{
"status": "affected",
"version": "17.9.5a"
},
{
"status": "affected",
"version": "17.12.3"
},
{
"status": "affected",
"version": "17.6.7"
},
{
"status": "affected",
"version": "17.14.1a"
},
{
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"version": "17.12.4"
},
{
"status": "affected",
"version": "17.12.3a"
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{
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{
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{
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{
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"title": "Cisco Snort DCERPC Stub Data Out of Bounds Read"
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CVE-2026-20026 (GCVE-0-2026-20026)
Vulnerability from cvelistv5 – Published: 2026-01-07 16:23 – Updated: 2026-01-07 16:54
VLAI?
EPSS
Title
Multiple Cisco Products Snort 3 DCERPC Vulnerabilities
Summary
Multiple Cisco products are affected by a vulnerability in the processing of DCE/RPC requests that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak sensitive information or to restart, resulting in an interruption of packet inspection.
This vulnerability is due to an error in buffer handling logic when processing DCE/RPC requests, which can result in a buffer use-after-free read. An attacker could exploit this vulnerability by sending a large number of DCE/RPC requests through an established connection that is inspected by Snort 3. A successful exploit could allow the attacker to unexpectedly restart the Snort 3 Detection Engine, which could cause a denial of service (DoS).
Severity ?
5.8 (Medium)
CWE
- CWE-415 - Double Free
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.0.0
Affected: 7.0.0.1 Affected: 7.0.1 Affected: 7.1.0 Affected: 7.0.1.1 Affected: 7.1.0.1 Affected: 7.0.2 Affected: 7.2.0 Affected: 7.0.2.1 Affected: 7.0.3 Affected: 7.1.0.2 Affected: 7.2.0.1 Affected: 7.0.4 Affected: 7.2.1 Affected: 7.0.5 Affected: 7.3.0 Affected: 7.2.2 Affected: 7.2.3 Affected: 7.3.1 Affected: 7.1.0.3 Affected: 7.2.4 Affected: 7.0.6 Affected: 7.2.5 Affected: 7.2.4.1 Affected: 7.3.1.1 Affected: 7.4.0 Affected: 7.0.6.1 Affected: 7.2.5.1 Affected: 7.4.1 Affected: 7.2.6 Affected: 7.0.6.2 Affected: 7.4.1.1 Affected: 7.2.7 Affected: 7.2.5.2 Affected: 7.3.1.2 Affected: 7.2.8 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.2.8.1 Affected: 7.0.6.3 Affected: 7.4.2.1 Affected: 7.2.9 Affected: 7.0.7 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.2.10 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.0.8 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.0.8.1 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.2.10.2 Affected: 7.4.3 |
|||||||
|
|||||||||
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{
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{
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{
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"version": "7.7.0"
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{
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{
"status": "affected",
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{
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{
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"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
"version": "16.12.3"
},
{
"status": "affected",
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"status": "affected",
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"status": "affected",
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{
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"status": "affected",
"version": "Everest-16.6.4"
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{
"status": "affected",
"version": "Everest-16.6.3"
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{
"status": "affected",
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{
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"status": "affected",
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"version": "16.12.1a"
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"status": "affected",
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"status": "affected",
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"version": "17.5.1"
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"version": "Fuji-16.9.7"
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"version": "17.3.3"
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"version": "17.5.1a"
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"status": "affected",
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"version": "17.6.1a"
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"status": "affected",
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"version": "Fuji-16.9.8"
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"status": "affected",
"version": "16.12.7"
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"status": "affected",
"version": "17.3.5"
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"status": "affected",
"version": "17.6.3"
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"status": "affected",
"version": "17.6.3a"
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"version": "17.7.2"
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"version": "17.9.1a"
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"status": "affected",
"version": "17.6.4"
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"status": "affected",
"version": "17.10.1a"
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"version": "17.3.6"
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"version": "16.12.8"
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"version": "17.3.7"
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"version": "17.9.2a"
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"status": "affected",
"version": "17.6.5"
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{
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"version": "17.9.7a"
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{
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{
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"version": "17.12.5b"
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{
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"version": "17.12.5c"
},
{
"status": "affected",
"version": "17.15.4"
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"status": "affected",
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{
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{
"status": "affected",
"version": "17.12.6"
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{
"status": "affected",
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"version": "17.15.4c"
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}
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"baseScore": 5.8,
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"confidentialityImpact": "NONE",
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"scope": "CHANGED",
"userInteraction": "NONE",
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"version": "3.1"
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"title": "Multiple Cisco Products Snort 3 DCERPC Vulnerabilities"
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}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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