{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-65610",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T15:32:36.475854Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-20T15:57:11.971Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "nnn",
          "repo": "https://github.com/jarun/nnn",
          "vendor": "nnn",
          "versions": [
            {
              "status": "affected",
              "version": "5.2",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Micha\u0142 Majchrowicz (AFINE Team)"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Marcin Wyczechowski (AFINE Team)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim\u0027s execution environment can provide\u0026nbsp;an arbitrary HOME path with length\u003cspan\u003e\u0026nbsp;that is truncated\u003c/span\u003e\u003cspan\u003e\u0026nbsp;to 0. T\u003c/span\u003e\u003cspan\u003ehe expression (homelen - 1) is promoted to signed int and\u0026nbsp;\u003c/span\u003e\u003cspan\u003ebecomes -1 and producing an\u0026nbsp;\u003c/span\u003e\u003cspan\u003eout-of-bounds read and an out-of-bounds write one byte before the path \u003c/span\u003e\u003cspan\u003ebuffer.\u0026nbsp;\u003c/span\u003e\u003cdiv\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv\u003eMaintainer of this project was notified about this vulnerability\u003cspan\u003e. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.\u003c/span\u003e\u003c/div\u003e"
            }
          ],
          "value": "nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim\u0027s execution environment can provide\u00a0an arbitrary HOME path with length\u00a0that is truncated\u00a0to 0. The expression (homelen - 1) is promoted to signed int and\u00a0becomes -1 and producing an\u00a0out-of-bounds read and an out-of-bounds write one byte before the path buffer.\u00a0\n\n\n\n\nMaintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-540",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-540 Overread Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 2.4,
            "baseSeverity": "LOW",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-197",
              "description": "CWE-197 Numeric truncation error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T13:21:13.455Z",
        "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
        "shortName": "CERT-PL"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/en/posts/2026/08/CVE-2026-65609"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "Numeric Truncation Error in nnn",
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        "engine": "Vulnogram 1.0.3"
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  "cveMetadata": {
    "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
    "assignerShortName": "CERT-PL",
    "cveId": "CVE-2026-65610",
    "datePublished": "2026-08-19T13:21:13.455Z",
    "dateReserved": "2026-07-22T10:59:31.846Z",
    "dateUpdated": "2026-08-20T15:57:11.971Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}