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cnvd-2025-21252
Vulnerability from cnvd
Title
Cisco IOS XR数据伪造问题漏洞（CNVD-2025-21252）
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存在数据伪造问题漏洞，该漏洞源于安装过程中文件验证不完整，攻击者可利用该漏洞导致加载未签名软件。
Severity
中
VLAI Severity ?
Patch Name
Cisco IOS XR数据伪造问题漏洞（CNVD-2025-21252）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存在数据伪造问题漏洞，该漏洞源于安装过程中文件验证不完整，攻击者可利用该漏洞导致加载未签名软件。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-xrsig-UY4zRUCG
Reference
https://nvd.nist.gov/vuln/detail/CVE-2025-20248
Impacted products
| Name | Cisco IOS XR |
|---|
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"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2025-21252",
"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\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u6587\u4ef6\u9a8c\u8bc1\u4e0d\u5b8c\u6574\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u52a0\u8f7d\u672a\u7b7e\u540d\u8f6f\u4ef6\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\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2025-21252\uff09\u7684\u8865\u4e01",
"products": {
"product": "Cisco IOS XR"
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-20248",
"serverity": "\u4e2d",
"submitTime": "2025-09-12",
"title": "Cisco IOS XR\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2025-21252\uff09"
}
CVE-2025-20248 (GCVE-0-2025-20248)
Vulnerability from cvelistv5
Published
2025-09-10 16:06
Modified
2025-09-11 03:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Summary
A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.
This vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process.
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: 7.1.25 Version: 6.6.4 Version: 7.3.1 Version: 7.1.3 Version: 6.7.3 Version: 7.4.1 Version: 7.2.2 Version: 6.5.31 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: 7.6.15 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: 7.8.1 Version: 7.5.3 Version: 7.7.2 Version: 6.9.2 Version: 7.9.1 Version: 7.8.2 Version: 7.5.4 Version: 6.5.33 Version: 7.8.22 Version: 7.10.1 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: 7.6.3 Version: 24.1.1 Version: 7.3.6 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: 24.4.15 Version: 6.5.351 Version: 6.5.352 |
{
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{
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"content": {
"id": "CVE-2025-20248",
"options": [
{
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},
{
"Automatable": "no"
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{
"Technical Impact": "total"
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"timestamp": "2025-09-10T00:00:00+00:00",
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"providerMetadata": {
"dateUpdated": "2025-09-11T03:56:26.379Z",
"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"
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{
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"version": "6.5.26"
},
{
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{
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{
"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",
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{
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{
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{
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{
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"version": "7.0.2"
},
{
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{
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{
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{
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{
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},
{
"status": "affected",
"version": "7.1.25"
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{
"status": "affected",
"version": "6.6.4"
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
"status": "affected",
"version": "7.3.27"
},
{
"status": "affected",
"version": "7.6.1"
},
{
"status": "affected",
"version": "7.5.2"
},
{
"status": "affected",
"version": "7.6.15"
},
{
"status": "affected",
"version": "7.3.3"
},
{
"status": "affected",
"version": "7.7.1"
},
{
"status": "affected",
"version": "6.8.2"
},
{
"status": "affected",
"version": "7.3.4"
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{
"status": "affected",
"version": "7.4.2"
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{
"status": "affected",
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{
"status": "affected",
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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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{
"status": "affected",
"version": "7.8.22"
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{
"status": "affected",
"version": "7.10.1"
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{
"status": "affected",
"version": "7.7.21"
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{
"status": "affected",
"version": "7.9.2"
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{
"status": "affected",
"version": "7.3.5"
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{
"status": "affected",
"version": "7.5.5"
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{
"status": "affected",
"version": "7.11.1"
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{
"status": "affected",
"version": "7.9.21"
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{
"status": "affected",
"version": "7.10.2"
},
{
"status": "affected",
"version": "7.6.3"
},
{
"status": "affected",
"version": "24.1.1"
},
{
"status": "affected",
"version": "7.3.6"
},
{
"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"
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{
"status": "affected",
"version": "7.8.23"
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{
"status": "affected",
"version": "7.11.21"
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{
"status": "affected",
"version": "24.2.20"
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{
"status": "affected",
"version": "24.3.2"
},
{
"status": "affected",
"version": "24.4.10"
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{
"status": "affected",
"version": "6.5.35"
},
{
"status": "affected",
"version": "24.4.15"
},
{
"status": "affected",
"version": "6.5.351"
},
{
"status": "affected",
"version": "6.5.352"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\r\n\r\nThis vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process."
}
],
"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": [
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-347",
"description": "Improper Verification of Cryptographic Signature",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-09-10T16:06:49.860Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-xrsig-UY4zRUCG",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrsig-UY4zRUCG"
}
],
"source": {
"advisory": "cisco-sa-xrsig-UY4zRUCG",
"defects": [
"CSCwm03455"
],
"discovery": "EXTERNAL"
},
"title": "Cisco IOS XR Software Image Verification Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20248",
"datePublished": "2025-09-10T16:06:49.860Z",
"dateReserved": "2024-10-10T19:15:13.238Z",
"dateUpdated": "2025-09-11T03:56:26.379Z",
"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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