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cnvd-2025-21253
Vulnerability from cnvd
Title
Cisco IOS XR资源管理错误漏洞（CNVD-2025-21253）
Description
Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。
Cisco IOS XR存在资源管理错误漏洞，该漏洞源于应用存在不受控制的资源消耗，攻击者可利用该漏洞导致拒绝服务。
Severity
中
VLAI Severity ?
Patch Name
Cisco IOS XR资源管理错误漏洞（CNVD-2025-21253）的补丁
Patch Description
Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。
Cisco IOS XR存在资源管理错误漏洞，该漏洞源于应用存在不受控制的资源消耗，攻击者可利用该漏洞导致拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
厂商已发布了漏洞修复程序，请及时关注更新： https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-arp-storm-EjUU55yM
Reference
https://nvd.nist.gov/vuln/detail/CVE-2025-20340
Impacted products
| Name | Cisco IOS XR |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2025-20340",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-20340"
}
},
"description": "Cisco IOS XR\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS XR\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5e94\u7528\u5b58\u5728\u4e0d\u53d7\u63a7\u5236\u7684\u8d44\u6e90\u6d88\u8017\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
"formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-arp-storm-EjUU55yM",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2025-21253",
"openTime": "2025-09-12",
"patchDescription": "Cisco IOS XR\u662f\u7f8e\u56fd\u601d\u79d1\uff08Cisco\uff09\u516c\u53f8\u7684\u4e00\u5957\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS XR\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5e94\u7528\u5b58\u5728\u4e0d\u53d7\u63a7\u5236\u7684\u8d44\u6e90\u6d88\u8017\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "Cisco IOS XR\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2025-21253\uff09\u7684\u8865\u4e01",
"products": {
"product": "Cisco IOS XR"
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-20340",
"serverity": "\u4e2d",
"submitTime": "2025-09-12",
"title": "Cisco IOS XR\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2025-21253\uff09"
}
CVE-2025-20340 (GCVE-0-2025-20340)
Vulnerability from cvelistv5
Published
2025-09-10 16:06
Modified
2025-09-10 18:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
A vulnerability in the Address Resolution Protocol (ARP) implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a broadcast storm, leading to a denial of service (DoS) condition on an affected device.
This vulnerability is due to how Cisco IOS XR Software processes a high, sustained rate of ARP traffic hitting the management interface. Under certain conditions, an attacker could exploit this vulnerability by sending an excessive amount of traffic to the management interface of an affected device, overwhelming its ARP processing capabilities. A successful exploit could result in degraded device performance, loss of management connectivity, and complete unresponsiveness of the system, leading to a DoS condition.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software |
Version: 6.5.3 Version: 6.5.29 Version: 6.5.1 Version: 6.6.1 Version: 6.5.2 Version: 6.5.92 Version: 6.5.15 Version: 6.6.2 Version: 7.0.1 Version: 6.6.25 Version: 6.5.26 Version: 6.6.11 Version: 6.5.25 Version: 6.5.28 Version: 6.5.93 Version: 6.6.12 Version: 6.5.90 Version: 7.0.0 Version: 7.1.1 Version: 7.0.90 Version: 6.6.3 Version: 6.7.1 Version: 7.0.2 Version: 7.1.15 Version: 7.2.0 Version: 7.2.1 Version: 7.1.2 Version: 6.7.2 Version: 7.0.11 Version: 7.0.12 Version: 7.0.14 Version: 7.1.25 Version: 6.6.4 Version: 7.2.12 Version: 7.3.1 Version: 7.1.3 Version: 6.7.3 Version: 7.4.1 Version: 7.2.2 Version: 6.7.4 Version: 6.5.31 Version: 7.3.15 Version: 7.3.16 Version: 6.8.1 Version: 7.4.15 Version: 6.5.32 Version: 7.3.2 Version: 7.5.1 Version: 7.4.16 Version: 7.3.27 Version: 7.6.1 Version: 7.5.2 Version: 7.8.1 Version: 7.6.15 Version: 7.5.12 Version: 7.8.12 Version: 7.3.3 Version: 7.7.1 Version: 6.8.2 Version: 7.3.4 Version: 7.4.2 Version: 6.7.35 Version: 6.9.1 Version: 7.6.2 Version: 7.5.3 Version: 7.7.2 Version: 6.9.2 Version: 7.9.1 Version: 7.10.1 Version: 7.8.2 Version: 7.5.4 Version: 6.5.33 Version: 7.8.22 Version: 7.7.21 Version: 7.9.2 Version: 7.3.5 Version: 7.5.5 Version: 7.11.1 Version: 7.9.21 Version: 7.10.2 Version: 24.1.1 Version: 7.6.3 Version: 7.3.6 Version: 7.5.52 Version: 7.11.2 Version: 24.2.1 Version: 24.1.2 Version: 24.2.11 Version: 24.3.1 Version: 24.4.1 Version: 24.2.2 Version: 7.8.23 Version: 7.11.21 Version: 24.2.20 Version: 24.3.2 Version: 24.4.10 Version: 6.5.35 Version: 25.1.1 Version: 24.4.2 Version: 24.3.20 Version: 24.4.15 Version: 6.5.351 Version: 24.3.30 Version: 6.5.352 Version: 24.4.30 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-20340",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-09-10T18:30:55.478853Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-09-10T18:31:00.589Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco IOS XR Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "6.5.3"
},
{
"status": "affected",
"version": "6.5.29"
},
{
"status": "affected",
"version": "6.5.1"
},
{
"status": "affected",
"version": "6.6.1"
},
{
"status": "affected",
"version": "6.5.2"
},
{
"status": "affected",
"version": "6.5.92"
},
{
"status": "affected",
"version": "6.5.15"
},
{
"status": "affected",
"version": "6.6.2"
},
{
"status": "affected",
"version": "7.0.1"
},
{
"status": "affected",
"version": "6.6.25"
},
{
"status": "affected",
"version": "6.5.26"
},
{
"status": "affected",
"version": "6.6.11"
},
{
"status": "affected",
"version": "6.5.25"
},
{
"status": "affected",
"version": "6.5.28"
},
{
"status": "affected",
"version": "6.5.93"
},
{
"status": "affected",
"version": "6.6.12"
},
{
"status": "affected",
"version": "6.5.90"
},
{
"status": "affected",
"version": "7.0.0"
},
{
"status": "affected",
"version": "7.1.1"
},
{
"status": "affected",
"version": "7.0.90"
},
{
"status": "affected",
"version": "6.6.3"
},
{
"status": "affected",
"version": "6.7.1"
},
{
"status": "affected",
"version": "7.0.2"
},
{
"status": "affected",
"version": "7.1.15"
},
{
"status": "affected",
"version": "7.2.0"
},
{
"status": "affected",
"version": "7.2.1"
},
{
"status": "affected",
"version": "7.1.2"
},
{
"status": "affected",
"version": "6.7.2"
},
{
"status": "affected",
"version": "7.0.11"
},
{
"status": "affected",
"version": "7.0.12"
},
{
"status": "affected",
"version": "7.0.14"
},
{
"status": "affected",
"version": "7.1.25"
},
{
"status": "affected",
"version": "6.6.4"
},
{
"status": "affected",
"version": "7.2.12"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.1.3"
},
{
"status": "affected",
"version": "6.7.3"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.2"
},
{
"status": "affected",
"version": "6.7.4"
},
{
"status": "affected",
"version": "6.5.31"
},
{
"status": "affected",
"version": "7.3.15"
},
{
"status": "affected",
"version": "7.3.16"
},
{
"status": "affected",
"version": "6.8.1"
},
{
"status": "affected",
"version": "7.4.15"
},
{
"status": "affected",
"version": "6.5.32"
},
{
"status": "affected",
"version": "7.3.2"
},
{
"status": "affected",
"version": "7.5.1"
},
{
"status": "affected",
"version": "7.4.16"
},
{
"status": "affected",
"version": "7.3.27"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.5.2"
},
{
"status": "affected",
"version": "7.8.1"
},
{
"status": "affected",
"version": "7.6.15"
},
{
"status": "affected",
"version": "7.5.12"
},
{
"status": "affected",
"version": "7.8.12"
},
{
"status": "affected",
"version": "7.3.3"
},
{
"status": "affected",
"version": "7.7.1"
},
{
"status": "affected",
"version": "6.8.2"
},
{
"status": "affected",
"version": "7.3.4"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "6.7.35"
},
{
"status": "affected",
"version": "6.9.1"
},
{
"status": "affected",
"version": "7.6.2"
},
{
"status": "affected",
"version": "7.5.3"
},
{
"status": "affected",
"version": "7.7.2"
},
{
"status": "affected",
"version": "6.9.2"
},
{
"status": "affected",
"version": "7.9.1"
},
{
"status": "affected",
"version": "7.10.1"
},
{
"status": "affected",
"version": "7.8.2"
},
{
"status": "affected",
"version": "7.5.4"
},
{
"status": "affected",
"version": "6.5.33"
},
{
"status": "affected",
"version": "7.8.22"
},
{
"status": "affected",
"version": "7.7.21"
},
{
"status": "affected",
"version": "7.9.2"
},
{
"status": "affected",
"version": "7.3.5"
},
{
"status": "affected",
"version": "7.5.5"
},
{
"status": "affected",
"version": "7.11.1"
},
{
"status": "affected",
"version": "7.9.21"
},
{
"status": "affected",
"version": "7.10.2"
},
{
"status": "affected",
"version": "24.1.1"
},
{
"status": "affected",
"version": "7.6.3"
},
{
"status": "affected",
"version": "7.3.6"
},
{
"status": "affected",
"version": "7.5.52"
},
{
"status": "affected",
"version": "7.11.2"
},
{
"status": "affected",
"version": "24.2.1"
},
{
"status": "affected",
"version": "24.1.2"
},
{
"status": "affected",
"version": "24.2.11"
},
{
"status": "affected",
"version": "24.3.1"
},
{
"status": "affected",
"version": "24.4.1"
},
{
"status": "affected",
"version": "24.2.2"
},
{
"status": "affected",
"version": "7.8.23"
},
{
"status": "affected",
"version": "7.11.21"
},
{
"status": "affected",
"version": "24.2.20"
},
{
"status": "affected",
"version": "24.3.2"
},
{
"status": "affected",
"version": "24.4.10"
},
{
"status": "affected",
"version": "6.5.35"
},
{
"status": "affected",
"version": "25.1.1"
},
{
"status": "affected",
"version": "24.4.2"
},
{
"status": "affected",
"version": "24.3.20"
},
{
"status": "affected",
"version": "24.4.15"
},
{
"status": "affected",
"version": "6.5.351"
},
{
"status": "affected",
"version": "24.3.30"
},
{
"status": "affected",
"version": "6.5.352"
},
{
"status": "affected",
"version": "24.4.30"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Address Resolution Protocol (ARP) implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a broadcast storm, leading to a denial of service (DoS) condition on an affected device.\u0026nbsp;\r\n\r\nThis vulnerability is due to how Cisco IOS XR Software processes a high, sustained rate of ARP traffic hitting the management interface. Under certain conditions, an attacker could exploit this vulnerability by sending an excessive amount of traffic to the management interface of an affected device, overwhelming its ARP processing capabilities. A successful exploit could result in degraded device performance, loss of management connectivity, and complete unresponsiveness of the system, leading to a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "Uncontrolled Resource Consumption",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-09-10T16:06:58.467Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-iosxr-arp-storm-EjUU55yM",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-arp-storm-EjUU55yM"
}
],
"source": {
"advisory": "cisco-sa-iosxr-arp-storm-EjUU55yM",
"defects": [
"CSCwm86399"
],
"discovery": "EXTERNAL"
},
"title": "Cisco IOS XR Address Resolution Protocol Broadcast Storm Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20340",
"datePublished": "2025-09-10T16:06:58.467Z",
"dateReserved": "2024-10-10T19:15:13.255Z",
"dateUpdated": "2025-09-10T18:31:00.589Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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