FKIE_CVE-2026-34926

Vulnerability from fkie_nvd - Published: 2026-05-21 14:16 - Updated: 2026-05-21 20:16
Severity
6.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L
Summary
A directory traversal vulnerability in the Apex One (on-premise) server could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations. This vulnerability is only exploitable on the on-premise version of Apex One and a potential attacker must have access to the Apex One Server and already obtained administrative credentials to the server via some other method to exploit this vulnerability.
References
security@trendmicro.comhttps://jvn.jp/en/vu/JVNVU90583059/
security@trendmicro.comhttps://success.trendmicro.com/en-US/solution/KA-0023430
security@trendmicro.comhttps://success.trendmicro.com/ja-JP/solution/KA-0022974
security@trendmicro.comhttps://www.jpcert.or.jp/english/at/2026/at260014.html
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926
Impacted products
Vendor Product Version
To clipboard 

{
  "cisaActionDue": "2026-06-04",
  "cisaExploitAdd": "2026-05-21",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A directory traversal vulnerability in the Apex One (on-premise) server could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.\n\n\r\nThis vulnerability is only exploitable on the on-premise version of Apex One and a potential attacker must have access to the Apex One Server and already obtained administrative credentials to the server via some other method to exploit this vulnerability."
    }
  ],
  "id": "CVE-2026-34926",
  "lastModified": "2026-05-21T20:16:14.027",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.3,
        "source": "security@trendmicro.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-21T14:16:45.213",
  "references": [
    {
      "source": "security@trendmicro.com",
      "url": "https://jvn.jp/en/vu/JVNVU90583059/"
    },
    {
      "source": "security@trendmicro.com",
      "url": "https://success.trendmicro.com/en-US/solution/KA-0023430"
    },
    {
      "source": "security@trendmicro.com",
      "url": "https://success.trendmicro.com/ja-JP/solution/KA-0022974"
    },
    {
      "source": "security@trendmicro.com",
      "url": "https://www.jpcert.or.jp/english/at/2026/at260014.html"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34926"
    }
  ],
  "sourceIdentifier": "security@trendmicro.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-23"
        }
      ],
      "source": "security@trendmicro.com",
      "type": "Secondary"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.



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