Vulnerability-Lookup

GHSA-CWVV-M84P-3R2P

Vulnerability from github – Published: 2026-03-28 00:31 – Updated: 2026-03-28 00:31

Details

UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept SMTP traffic and obtain credentials by exploiting the insecure SSL host verification mechanism in the SMTP certificate validation process.

Severity ?

7.5 (High)


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

7.7 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2019-25652"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-27T22:16:19Z",
    "severity": "HIGH"
  },
  "details": "UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept SMTP traffic and obtain credentials by exploiting the insecure SSL host verification mechanism in the SMTP certificate validation process.",
  "id": "GHSA-cwvv-m84p-3r2p",
  "modified": "2026-03-28T00:31:15Z",
  "published": "2026-03-28T00:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25652"
    },
    {
      "type": "WEB",
      "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-003-003/982bbaa8-2a07-4f81-a5f6-0bb84753f391"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/unifi-network-controller-improper-certificate-validation-leading-to-credential-theft-via-mitm"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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-2019-25652 (GCVE-0-2019-25652)

Vulnerability from cvelistv5 – Published: 2026-03-27 21:19 – Updated: 2026-03-30 13:56

Title

UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM

Summary

Severity ?

7.6 (High)


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

7.5 (High)


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

CWE

CWE-295 - Improper Certificate Validation

Assigner

VulnCheck

References

URL

Tags

	https://community.ui.com/releases/Security-Adviso…	vendor-advisory
	https://www.vulncheck.com/advisories/unifi-networ…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Ubiquiti	UniFi Network Controller	Affected: 0 , < 5.10.22 (semver) Affected: 5.11 , < 5.11.18 (semver) Unaffected: 5.6.42 (semver)

Date Public ?

2019-05-15 00:00

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-25652",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T13:56:22.209974Z",
                "version": "2.0.3"
              },
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.6.42",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2019-05-15T00:00:00.000Z",
      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
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            "attackVector": "ADJACENT",
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            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
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            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "attackVector": "ADJACENT_NETWORK",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      "providerMetadata": {
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      },
      "references": [
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          "url": "https://community.ui.com/releases/Security-Advisory-Bulletin-003-003/982bbaa8-2a07-4f81-a5f6-0bb84753f391"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/unifi-network-controller-improper-certificate-validation-leading-to-credential-theft-via-mitm"
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      ],
      "title": "UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM",
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    "datePublished": "2026-03-27T21:19:26.490Z",
    "dateReserved": "2026-03-26T20:33:10.586Z",
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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-CWVV-M84P-3R2P

CVE-2019-25652 (GCVE-0-2019-25652)

Tags

Sightings

Nomenclature