CVE-2025-40896
CVE-2025-40896 is a medium-severity vulnerability in Nozominetworks Arc with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 6.3
- EPSS exploit prediction: 0% (2nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-208269
- Weakness: CWE-295
- Affected product: Nozominetworks Arc
- Published:
- Last modified:
Description
The server certificate was not verified when an Arc agent connected to a Guardian or CMC. A malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC.
Frequently asked questions
- What is CVE-2025-40896?
- The server certificate was not verified when an Arc agent connected to a Guardian or CMC. A malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC.
- How severe is CVE-2025-40896?
- CVE-2025-40896 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-40896 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-40896?
- CVE-2025-40896 affects Nozominetworks Arc. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-40896?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-40896 have an EU (EUVD) identifier?
- Yes. CVE-2025-40896 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208269.
- When was CVE-2025-40896 published?
- CVE-2025-40896 was published on 2026-03-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nozominetworks:arc:*:*:*:*:*:*:*:*
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