CVE-2025-20327 (GCVE-0-2025-20327)
Vulnerability from cvelistv5 – Published: 2025-09-24 17:11 – Updated: 2025-09-24 18:11
VLAI
EPSS
VEX
Summary
A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-24 18:08 UTC
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | IOS |
Affected:
15.2(6)E2
Affected: 15.2(7)E Affected: 15.2(6)E2a Affected: 15.2(6)E2b Affected: 15.2(7)E1 Affected: 15.2(7)E0a Affected: 15.2(7)E0b Affected: 15.2(7)E0s Affected: 15.2(6)E3 Affected: 15.2(7)E2 Affected: 15.2(7a)E0b Affected: 15.2(7)E3 Affected: 15.2(7)E1a Affected: 15.2(7b)E0b Affected: 15.2(7)E2a Affected: 15.2(7)E4 Affected: 15.2(7)E3k Affected: 15.2(8)E Affected: 15.2(8)E1 Affected: 15.2(7)E5 Affected: 15.2(7)E6 Affected: 15.2(8)E2 Affected: 15.2(7)E7 Affected: 15.2(8)E3 Affected: 15.2(7)E8 Affected: 15.2(8)E4 Affected: 15.2(7)E9 Affected: 15.2(8)E5 Affected: 15.2(7)E10 |
guessed |
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},
{
"status": "affected",
"version": "15.2(7a)E0b"
},
{
"status": "affected",
"version": "15.2(7)E3"
},
{
"status": "affected",
"version": "15.2(7)E1a"
},
{
"status": "affected",
"version": "15.2(7b)E0b"
},
{
"status": "affected",
"version": "15.2(7)E2a"
},
{
"status": "affected",
"version": "15.2(7)E4"
},
{
"status": "affected",
"version": "15.2(7)E3k"
},
{
"status": "affected",
"version": "15.2(8)E"
},
{
"status": "affected",
"version": "15.2(8)E1"
},
{
"status": "affected",
"version": "15.2(7)E5"
},
{
"status": "affected",
"version": "15.2(7)E6"
},
{
"status": "affected",
"version": "15.2(8)E2"
},
{
"status": "affected",
"version": "15.2(7)E7"
},
{
"status": "affected",
"version": "15.2(8)E3"
},
{
"status": "affected",
"version": "15.2(7)E8"
},
{
"status": "affected",
"version": "15.2(8)E4"
},
{
"status": "affected",
"version": "15.2(7)E9"
},
{
"status": "affected",
"version": "15.2(8)E5"
},
{
"status": "affected",
"version": "15.2(7)E10"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco Product Security Incident Response Team (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": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1287",
"description": "Improper Validation of Specified Type of Input",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-09-24T17:11:44.744Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-ios-invalid-url-dos-Nvxszf6u",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u"
}
],
"source": {
"advisory": "cisco-sa-ios-invalid-url-dos-Nvxszf6u",
"defects": [
"CSCwo34150"
],
"discovery": "EXTERNAL"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20327",
"datePublished": "2025-09-24T17:11:44.744Z",
"dateReserved": "2024-10-10T19:15:13.254Z",
"dateUpdated": "2025-09-24T18:11:26.278Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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