Vulnerability-Lookup

UBUNTU-CVE-2026-116728 (CVE-2026-116728)

Vulnerability from osv_ubuntu – Published: 2026-10-26 22:16 – Updated: 2026-10-28 17:50 – Source website

Details

libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application.

Severity

5.5 (Medium)


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

5.5 (Medium)


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

6.8 (Medium)


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

6.8 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-116728	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-116728	REPORT
	https://github.com/libyal/libfvde	REPORT
	https://github.com/cveproject/cvelistv5/tree/main…	REPORT
	https://github.com/libyal/libfvde/blob/20260923/l…	REPORT
	https://github.com/libyal/libfvde/commit/c2676fe4…	REPORT
	https://github.com/libyal/libfvde/issues/70	REPORT
	https://hackmd.io/@haindpwn/libfvde-encrypted-met…	REPORT
	https://nvd.nist.gov/vuln/detail/cve-2026-116728	REPORT
	https://www.vulncheck.com/advisories/libfvde-thro…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20180108-1"
          },
          {
            "binary_name": "libfvde1",
            "binary_version": "20180108-1"
          },
          {
            "binary_name": "python-libfvde",
            "binary_version": "20180108-1"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20180108-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20180108-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20160918-1build1",
        "20170930-1",
        "20180108-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20190104-1.1"
          },
          {
            "binary_name": "libfvde1",
            "binary_version": "20190104-1.1"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20190104-1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20190104-1.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20190104-1",
        "20190104-1build1",
        "20190104-1ubuntu1",
        "20190104-1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20190104-1.1build2"
          },
          {
            "binary_name": "libfvde1",
            "binary_version": "20190104-1.1build2"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20190104-1.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20190104-1.1build2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20190104-1.1build1",
        "20190104-1.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20190104-1.2build2"
          },
          {
            "binary_name": "libfvde1t64",
            "binary_version": "20190104-1.2build2"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20190104-1.2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20190104-1.2build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20190104-1.1build3",
        "20190104-1.1build4",
        "20190104-1.2",
        "20190104-1.2build1",
        "20190104-1.2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20240502-2build1"
          },
          {
            "binary_name": "libfvde1t64",
            "binary_version": "20240502-2build1"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20240502-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20240502-2build1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20240502-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libfvde-utils",
            "binary_version": "20240502-2build1"
          },
          {
            "binary_name": "libfvde1t64",
            "binary_version": "20240502-2build1"
          },
          {
            "binary_name": "python3-libfvde",
            "binary_version": "20240502-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libfvde",
        "purl": "pkg:deb/ubuntu/libfvde@20240502-2build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20240502-1build1",
        "20240502-2",
        "20240502-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application.",
  "id": "UBUNTU-CVE-2026-116728",
  "modified": "2026-10-28T17:50:38Z",
  "published": "2026-10-26T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-116728"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116728"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libfvde"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cveproject/cvelistv5/tree/main/cves/2026/116xxx/cve-2026-116728.json"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c#l3798-l3813"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libfvde/issues/70"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-116728"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds-read-via-libfvde-encrypted-metadata-read-type-0x0024"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-116728"
  ]
}

CVE-2026-116728 (GCVE-0-2026-116728)

Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-10-31 01:57

Title

libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x0024

Summary

Severity

6.8 (Medium)


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

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-31 01:57 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7402 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/libyal/libfvde/issues/70	issue-tracking
https://github.com/libyal/libfvde	product
https://github.com/libyal/libfvde/commit/c2676fe4…	patch
https://github.com/libyal/libfvde/blob/20260923/l…	technical-description
https://hackmd.io/@haindpwn/libfvde-encrypted-met…	third-party-advisory
https://www.vulncheck.com/advisories/libfvde-thro…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libyal	libfvde	Affected: 0 , ≤ 20260923 (custom)

Date Public

2026-10-22 00:00

Credits

HaiND from the Post and Telecommunication Institute of Technology

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-116728",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-31T01:57:10.421702Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-31T01:57:19.838Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/libyal/libfvde",
          "product": "libfvde",
          "repo": "https://github.com/libyal/libfvde",
          "vendor": "libyal",
          "versions": [
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              "lessThanOrEqual": "20260923",
              "status": "affected",
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            }
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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-22T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
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        {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
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        },
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          "tags": [
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          "url": "https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read"
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    "state": "PUBLISHED"
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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.

Vulnerability timeline

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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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UBUNTU-CVE-2026-116728 (CVE-2026-116728)

CVE-2026-116728 (GCVE-0-2026-116728)

Tags

Sightings

Nomenclature

Vulnerability timeline

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