VulnerabilityPublished 27 Aug 2025

CVE-2025-20348: Cisco Nexus Dashboard · Exposure of Sensitive Information Through Sent Data

Affects Cisco Nexus DashboardSource CVE Database V5

Not known to be exploited · CVSS 5.0 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.0Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Changed
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

European organizations should implement the following specific mitigation measures: 1) Immediately review and restrict access to Cisco Nexus Dashboard REST API endpoints, ensuring that only trusted and necessary users have authenticated access. 2) Employ network segmentation and firewall rules to limit exposure of the management interfaces to trusted networks and VPNs only. 3) Monitor API usage logs for unusual or unauthorized access patterns that could indicate exploitation attempts. 4) Enforce strong authentication mechanisms, including multi-factor authentication (MFA), to reduce the risk of credential compromise. 5) Regularly update and patch Cisco Nexus Dashboard software as Cisco releases security updates addressing this vulnerability. 6) Conduct periodic security audits and penetration testing focused on API authorization controls to detect similar weaknesses. 7) Implement strict file integrity monitoring on the devices to detect unauthorized file uploads or modifications promptly. 8) Educate administrators on the risks of this vulnerability and best practices for secure API usage. These targeted actions go beyond generic advice by focusing on access control hardening, monitoring, and proactive detection tailored to the nature of this REST API authorization flaw.

Description

A vulnerability in the REST API endpoints of Cisco Nexus Dashboard and Cisco Nexus Dashboard Fabric Controller (NDFC) could allow an authenticated, low-privileged, remote attacker to view sensitive information or upload and modify files on an affected device. This vulnerability exists because of missing authorization controls on some REST API endpoints. An attacker could exploit th vulnerability by sending crafted API requests to an affected endpoint. A successful exploit could allow the attacker to perform limited Administrator functions, such as accessing sensitive information regarding HTTP Proxy and NTP configurations, uploading images, and damaging image files on an affected device.

Impact

For European organizations, this vulnerability could have significant operational and security impacts, especially for enterprises and service providers relying on Cisco Nexus Dashboard for network management and automation. Exposure of sensitive configuration data like HTTP Proxy and NTP settings could facilitate further attacks, including man-in-the-middle or time-based attacks, undermining network integrity. The ability to upload and modify files remotely could lead to service disruptions or persistent footholds for attackers. Given the critical role of Cisco Nexus Dashboard in managing data center and network fabric infrastructure, exploitation could affect availability indirectly through misconfiguration or sabotage. Industries with stringent regulatory requirements around data protection and network security, such as finance, healthcare, and critical infrastructure sectors in Europe, could face compliance risks and reputational damage if this vulnerability is exploited. Moreover, the medium severity rating and the need for authentication mean insider threats or compromised credentials could be leveraged to exploit this vulnerability, emphasizing the importance of strong identity and access management controls.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nshs-urapi-gJuBVFpu (opens in a new tab)

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 27 Aug 2025, 16:48 UTC

Technical details

References

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