> CVE-2026-20316 [MEDIUM]

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PUBLISHED
2026-07-29 17:16
MODIFIED
2026-07-29 17:16
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
35.10%
Top 1.6%
⚠ CISA_KEV
⚡ EPSS ÉLEVÉ (35.1%)
DATA SOURCES:
NVD 🔗 2026-07-29 CISA KEV 🔗 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01

> 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.

> AFFECTED_PRODUCTS

Cisco - Secure Firewall Management Center (FMC)

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-259

> CWE DETAILED DESCRIPTIONS

CWE-259: Use of Hard-coded Password - The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound authentication to external components.

> HISTORIQUE DES MODIFICATIONS

Première apparition
29/07/2026 17:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-259: Use of Hard-coded Password - The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.
Nouvelle valeur:
CWE-259: Use of Hard-coded Password - The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound authentication to external components.
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-259: Use of Hard-coded Password - The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.
📊 ENRICHISSEMENT 29/07/2026 19:15
KEV
Champ modifié: Catalogue KEV
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 4 days ago

> REFERENCES

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci...
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