Vulnerability-Lookup

GHSA-32R6-GFFX-PJ25

Vulnerability from github – Published: 2026-03-04 15:30 – Updated: 2026-03-04 15:30

Details

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.

Severity ?

6.5 (Medium)


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

6.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40896"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-04T14:16:14Z",
    "severity": "MODERATE"
  },
  "details": "The server certificate was not verified when an Arc agent connected to a Guardian or CMC.\n\n\n\nA 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.",
  "id": "GHSA-32r6-gffx-pj25",
  "modified": "2026-03-04T15:30:35Z",
  "published": "2026-03-04T15:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40896"
    },
    {
      "type": "WEB",
      "url": "https://security.nozominetworks.com/NN-2025:18-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-40896 (GCVE-0-2025-40896)

Vulnerability from cvelistv5 – Published: 2026-03-04 13:52 – Updated: 2026-03-04 14:11

Title

Lack of TLS certificate validation when connecting Arc to a Guardian or CMC, in Arc before v2.2.0

Summary

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.

Severity ?

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


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

CWE

CWE-295 - Improper Certificate Validation

Assigner

Nozomi

References

URL

Tags

https://security.nozominetworks.com/NN-2025:18-01

Impacted products

	Vendor	Product	Version
	Nozomi Networks	Arc	Affected: 0 , < 2.2.0 (semver)

Date Public ?

2026-03-04 08:00

Credits

This issue was found by Felix Eberstaller of Limes Security during a VAPT testing session commissioned by one of our customers.

Show details on NVD website

JSON

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                "id": "CVE-2025-40896",
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-04T14:11:20.778867Z",
                "version": "2.0.3"
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-32R6-GFFX-PJ25

CVE-2025-40896 (GCVE-0-2025-40896)

Tags

Sightings

Nomenclature