Vulnerability-Lookup

ubuntu-cve-2026-67859

Vulnerability from osv_ubuntu

Published

2026-08-04 22:17

Modified

2026-08-04 22:17

Summary

Details

Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-67859	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-67859	REPORT
	https://github.com/open62541/open62541/issues/8095	REPORT
	https://github.com/open62541/open62541/blob/maste…	REPORT
	https://github.com/open62541/open62541/blob/maste…	REPORT
	https://github.com/open62541/open62541/blob/maste…	REPORT
	https://github.com/open62541/open62541/blob/maste…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopen62541-1.4",
            "binary_version": "1.4.11.1-1build1"
          },
          {
            "binary_name": "libopen62541-1.4-tools",
            "binary_version": "1.4.11.1-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "open62541",
        "purl": "pkg:deb/ubuntu/open62541@1.4.11.1-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.11.1-1",
        "1.4.11.1-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.",
  "id": "UBUNTU-CVE-2026-67859",
  "modified": "2026-08-04T22:17:00Z",
  "published": "2026-08-04T22:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-67859"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-67859"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open62541/open62541/issues/8095"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open62541/open62541/blob/master/examples/discovery/server_lds.c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open62541/open62541/blob/master/src/util/ua_util.c"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-67859"
  ]
}

CVE-2026-67859 (GCVE-0-2026-67859)

Vulnerability from cvelistv5 – Published: 2026-08-04 00:00 – Updated: 2026-08-05 14:36

Summary

Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

n/a
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

mitre

References

5 references

URL	Tags
https://github.com/open62541/open62541/blob/maste…
https://github.com/open62541/open62541/blob/maste…
https://github.com/open62541/open62541/issues/8095
https://github.com/open62541/open62541/blob/maste…
https://github.com/open62541/open62541/blob/maste…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-67859",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T14:35:43.093570Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-120",
                "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-05T14:36:45.370Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/open62541/open62541/issues/8095"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-04T21:42:06.781Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c"
        },
        {
          "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c"
        },
        {
          "url": "https://github.com/open62541/open62541/issues/8095"
        },
        {
          "url": "https://github.com/open62541/open62541/blob/master/examples/discovery/server_lds.c"
        },
        {
          "url": "https://github.com/open62541/open62541/blob/master/src/util/ua_util.c"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-67859",
    "datePublished": "2026-08-04T00:00:00.000Z",
    "dateReserved": "2026-07-30T00:00:00.000Z",
    "dateUpdated": "2026-08-05T14:36:45.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

ubuntu-cve-2026-67859

Vulnerability from osv_ubuntu

CVE-2026-67859 (GCVE-0-2026-67859)

Tags

Sightings

Nomenclature