CVE-2025-20181

A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to missing signature verification for specific files that may be loaded during the device boot process. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute arbitrary code at boot time. Because this allows the attacker to bypass a major security feature of the device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

V3 Legend

Vector : AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c2960-3560-sboot-ZtqADrHq

Configurations

No configuration.

History

08 May 2025, 14:39

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad en el software Cisco IOS para los switches Cisco Catalyst de las series 2960X, 2960XR, 2960CX y 3560CX podría permitir que un atacante local autenticado con nivel de privilegio 15, o uno no autenticado con acceso físico al dispositivo, ejecute código persistente durante el arranque y rompa la cadena de confianza. Esta vulnerabilidad se debe a la falta de verificación de firmas para archivos específicos que pueden cargarse durante el arranque del dispositivo. Un atacante podría explotar esta vulnerabilidad colocando un archivo manipulado en una ubicación específica del dispositivo afectado. Una explotación exitosa podría permitir al atacante ejecutar código arbitrario durante el arranque. Dado que esto permite al atacante eludir una importante función de seguridad del dispositivo, Cisco ha elevado la calificación de impacto en la seguridad (SIR) de este aviso de media a alta.

07 May 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-07 18:15

Updated : 2025-05-08 14:39

NVD link : CVE-2025-20181

Mitre link : CVE-2025-20181

CVE.ORG link : CVE-2025-20181

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2025-20181", "cveTags": [], "metrics": {"cvssMetricV30": [{"type": "Secondary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 6.8, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}]}, "published": "2025-05-07T18:15:37.973", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c2960-3560-sboot-ZtqADrHq", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust.\r\n\r This vulnerability is due to missing signature verification for specific files that may be loaded during the device boot process. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute arbitrary code at boot time.\r\n\r Because this allows the attacker to bypass a major security feature of the device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High."}, {"lang": "es", "value": "Una vulnerabilidad en el software Cisco IOS para los switches Cisco Catalyst de las series 2960X, 2960XR, 2960CX y 3560CX podr\u00eda permitir que un atacante local autenticado con nivel de privilegio 15, o uno no autenticado con acceso f\u00edsico al dispositivo, ejecute c\u00f3digo persistente durante el arranque y rompa la cadena de confianza. Esta vulnerabilidad se debe a la falta de verificaci\u00f3n de firmas para archivos espec\u00edficos que pueden cargarse durante el arranque del dispositivo. Un atacante podr\u00eda explotar esta vulnerabilidad colocando un archivo manipulado en una ubicaci\u00f3n espec\u00edfica del dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante ejecutar c\u00f3digo arbitrario durante el arranque. Dado que esto permite al atacante eludir una importante funci\u00f3n de seguridad del dispositivo, Cisco ha elevado la calificaci\u00f3n de impacto en la seguridad (SIR) de este aviso de media a alta."}], "lastModified": "2025-05-08T14:39:09.683", "sourceIdentifier": "psirt@cisco.com"}

6.8 /10