cve-2025-20248
Vulnerability from cvelistv5
Published
2025-09-10 16:06
Modified
2025-09-11 03:56
Severity ?
EPSS score ?
Summary
Cisco IOS XR Software Image Verification Bypass Vulnerability
References
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Cisco | Cisco IOS XR Software |
{
"containers": {
"adp": [
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"metrics": [
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"other": {
"content": {
"id": "CVE-2025-20248",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-09-10T00:00:00+00:00",
"version": "2.0.3"
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"type": "ssvc"
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"providerMetadata": {
"dateUpdated": "2025-09-11T03:56:26.379Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco IOS XR Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "6.5.3"
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{
"status": "affected",
"version": "6.5.29"
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{
"status": "affected",
"version": "6.5.1"
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{
"status": "affected",
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "7.0.1"
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{
"status": "affected",
"version": "6.6.25"
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{
"status": "affected",
"version": "6.5.26"
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{
"status": "affected",
"version": "6.6.11"
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{
"status": "affected",
"version": "6.5.25"
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{
"status": "affected",
"version": "6.5.28"
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{
"status": "affected",
"version": "6.5.93"
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{
"status": "affected",
"version": "6.6.12"
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{
"status": "affected",
"version": "6.5.90"
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{
"status": "affected",
"version": "7.0.0"
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{
"status": "affected",
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{
"status": "affected",
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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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"status": "affected",
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"status": "affected",
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{
"status": "affected",
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"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "7.4.15"
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{
"status": "affected",
"version": "6.5.32"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "7.4.16"
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{
"status": "affected",
"version": "7.3.27"
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{
"status": "affected",
"version": "7.6.1"
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{
"status": "affected",
"version": "7.5.2"
},
{
"status": "affected",
"version": "7.6.15"
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{
"status": "affected",
"version": "7.3.3"
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{
"status": "affected",
"version": "7.7.1"
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{
"status": "affected",
"version": "6.8.2"
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{
"status": "affected",
"version": "7.3.4"
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{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "6.7.35"
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{
"status": "affected",
"version": "6.9.1"
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{
"status": "affected",
"version": "7.6.2"
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{
"status": "affected",
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{
"status": "affected",
"version": "7.5.3"
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{
"status": "affected",
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{
"status": "affected",
"version": "6.9.2"
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{
"status": "affected",
"version": "7.9.1"
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{
"status": "affected",
"version": "7.8.2"
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{
"status": "affected",
"version": "7.5.4"
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{
"status": "affected",
"version": "6.5.33"
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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"
},
{
"status": "affected",
"version": "7.9.2"
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{
"status": "affected",
"version": "7.3.5"
},
{
"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"
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{
"status": "affected",
"version": "24.4.1"
},
{
"status": "affected",
"version": "24.2.2"
},
{
"status": "affected",
"version": "7.8.23"
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{
"status": "affected",
"version": "7.11.21"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "6.5.35"
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{
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"version": "24.4.15"
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{
"status": "affected",
"version": "6.5.351"
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"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": [
{
"cvssV3_1": {
"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"
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"format": "cvssV3_1"
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],
"problemTypes": [
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"descriptions": [
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"cweId": "CWE-347",
"description": "Improper Verification of Cryptographic Signature",
"lang": "en",
"type": "cwe"
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]
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"providerMetadata": {
"dateUpdated": "2025-09-10T16:06:49.860Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
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"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",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-20248\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-09-10T16:15:36.117\",\"lastModified\":\"2025-09-11T17:14:10.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":6.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":0.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrsig-UY4zRUCG\",\"source\":\"psirt@cisco.com\"}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- 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.