cve-2026-20316
MEDIUM CVSS 5.3 nvd
Description
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced. Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.
Timeline
- Published
- 2026-07-29
- Last Modified
- 2026-10-24
CVSS Details
- Attack Vector
- NETWORK
- Attack Complexity
- LOW
- Privileges Required
- NONE
Affected Products
- cisco secure_firewall_management_center
CISA KEV — Known Exploited Vulnerability
- Name
- Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
- Added to KEV
- 2026-07-29
- Action due
- 2026-08-01
- Required action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Weaknesses (CWE)
CVSS metrics
| Version | Base | Severity | Vector | Exploitability | Impact | Source |
|---|---|---|---|---|---|---|
| 3.1 | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9 | 1.4 | psirt@cisco.com |
CPE configurations
OR
| CPE | Version range | Vulnerable |
|---|---|---|
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.0.0, <= 7.0.9 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.2.0, <= 7.2.11 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.3.0, <= 7.3.1.2 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.4.0, <= 7.4.7 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.6.0, <= 7.6.5 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 7.7.0, <= 7.7.12 | yes |
cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:* |
>= 10.0.0, <= 10.0.1 | yes |
NVD metadata
- NVD status
- Analyzed
- Source identifier
psirt@cisco.com
References
Linked Vulnerabilities
No linked vulnerabilities found.
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"datePublished": "2026-07-29T17:16:51.840",
"dateUpdated": "2026-10-24T13:10:00.147",
"description": "A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems.\r\n\r\nThis vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user. \r\nNote: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced. \r\nCisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.",
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"value": "A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems.\r\n\r\nThis vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user. \r\nNote: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced. \r\nCisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges."
},
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"value": "Una vulnerabilidad en la interfaz web del software Cisco Secure Firewall Management Center (FMC) podría permitir a un atacante remoto no autenticado iniciar sesión en un dispositivo afectado utilizando una cuenta de bajo privilegio para acceder a datos sensibles dentro de los sistemas impactados.\n\nEsta vulnerabilidad se debe a la presencia de credenciales de usuario estáticas para una cuenta de bajo privilegio. Un atacante podría explotar esta vulnerabilidad utilizando la cuenta para iniciar sesión en un sistema afectado. Un exploit exitoso podría permitir al atacante iniciar sesión en el sistema afectado y acceder a datos sensibles como el usuario de bajo privilegio.\nNota: Si la interfaz de gestión de FMC no tiene acceso público a internet, la superficie de ataque asociada con esta vulnerabilidad se reduce.\nCisco ha asignado a este aviso de seguridad una Calificación de Impacto de Seguridad (SIR) de Alta en lugar de Media, como indica la puntuación. La razón es que esta vulnerabilidad puede ser utilizada con otras vulnerabilidades del software Cisco Secure FMC para elevar privilegios."
}
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"id": "CVE-2026-20316",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"source": "nvd",
"title": "A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthe..."
}
Enrichment data
Aggregated bundle (all enrichments)