1810 lines
68 KiB
JSON
1810 lines
68 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-20221",
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"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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"state": "PUBLISHED",
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"assignerShortName": "cisco",
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"dateReserved": "2025-10-08T11:59:15.398Z",
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"datePublished": "2026-10-21T16:12:53.435Z",
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"dateUpdated": "2026-10-22T19:11:26.546Z"
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},
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"containers": {
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"cna": {
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"title": "Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerabilities",
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"metrics": [
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{
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"format": "cvssV3_1",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
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"baseScore": 5.8,
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"baseSeverity": "MEDIUM",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "CHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "LOW"
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}
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine.\r\n\r\nThis vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 Detection Engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. For more information, see the section of this advisory. The Snort 3 Detection Engine will restart automatically. No manual intervention is required."
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}
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],
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"references": [
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{
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"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-gre-JNpMHrTv",
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"name": "cisco-sa-snort3-gre-JNpMHrTv"
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}
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],
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"exploits": [
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{
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"lang": "en",
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"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
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}
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],
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"source": {
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"advisory": "cisco-sa-snort3-gre-JNpMHrTv",
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"discovery": "INTERNAL",
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"defects": [
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"CSCwt66239"
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]
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},
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "NULL Pointer Dereference",
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"type": "cwe",
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"cweId": "CWE-476"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Cisco",
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"product": "Cisco Cyber Vision",
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"versions": [
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{
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"version": "3.0.0",
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"status": "affected"
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"version": "3.0.2",
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{
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"version": "3.0.3",
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"status": "affected"
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},
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{
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"version": "3.0.1",
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},
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{
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"version": "3.1.0",
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{
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"version": "3.0.4",
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"version": "3.1.1",
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{
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"version": "5.5.1",
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{
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"status": "affected"
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}
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],
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"defaultStatus": "unknown"
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},
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{
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"vendor": "Cisco",
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"product": "Cisco Open Source Snort3",
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"version": "17.12.6",
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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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|
{
|
|
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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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"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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"shortName": "cisco",
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"dateUpdated": "2026-10-22T19:11:26.546Z"
|
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}
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},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
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{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-20221",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-22T13:23:54.810399Z"
|
|
}
|
|
}
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|
}
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],
|
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"title": "CISA ADP Vulnrichment",
|
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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|
"dateUpdated": "2026-10-22T13:37:55.375Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |