Vulnerability-Lookup

UBUNTU-CVE-2026-111140 (CVE-2026-111140)

Vulnerability from osv_ubuntu – Published: 2026-10-16 00:00 – Updated: 2026-10-16 00:00 – Source website

Details

libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 REGF hive with a value data cell ending its hive bin to leak adjacent heap bytes or crash parsers like regfexport and plaso.

Severity

6.1 (Medium)


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

6.9 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-111140	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-111140	REPORT
	https://github.com/libyal/libregf	REPORT
	https://github.com/libyal/libregf/blob/1a4bd85648…	REPORT
	https://hackmd.io/@haind-pwn/libregf-value-data-o…	REPORT
	https://www.vulncheck.com/advisories/libregf-thro…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20160107-1"
          },
          {
            "binary_name": "libregf1",
            "binary_version": "20160107-1"
          },
          {
            "binary_name": "python-libregf",
            "binary_version": "20160107-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20160107-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20150704-2",
        "20151205-1",
        "20151223-1",
        "20160107-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20170130-2"
          },
          {
            "binary_name": "libregf1",
            "binary_version": "20170130-2"
          },
          {
            "binary_name": "python-libregf",
            "binary_version": "20170130-2"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20170130-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20170130-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20170130-1build1",
        "20170130-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20190303-1.1"
          },
          {
            "binary_name": "libregf1",
            "binary_version": "20190303-1.1"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20190303-1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20190303-1.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20190303-1",
        "20190303-1ubuntu1",
        "20190303-1ubuntu2",
        "20190303-1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20201007-2build1"
          },
          {
            "binary_name": "libregf1",
            "binary_version": "20201007-2build1"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20201007-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20201007-2build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20201007-2",
        "20201007-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20201007-2.1build2"
          },
          {
            "binary_name": "libregf1t64",
            "binary_version": "20201007-2.1build2"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20201007-2.1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20201007-2.1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20201007-2build2",
        "20201007-2build3",
        "20201007-2.1",
        "20201007-2.1build1",
        "20201007-2.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20240421-2build1"
          },
          {
            "binary_name": "libregf1t64",
            "binary_version": "20240421-2build1"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20240421-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20240421-2build1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20240421-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libregf-utils",
            "binary_version": "20240421-2build1"
          },
          {
            "binary_name": "libregf1t64",
            "binary_version": "20240421-2build1"
          },
          {
            "binary_name": "python3-libregf",
            "binary_version": "20240421-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libregf",
        "purl": "pkg:deb/ubuntu/libregf@20240421-2build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "20240421-1build1",
        "20240421-2",
        "20240421-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 REGF hive with a value data cell ending its hive bin to leak adjacent heap bytes or crash parsers like regfexport and plaso.",
  "id": "UBUNTU-CVE-2026-111140",
  "modified": "2026-10-16T00:00:00Z",
  "published": "2026-10-16T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-111140"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111140"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libregf"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-111140"
  ]
}

CVE-2026-111140 (GCVE-0-2026-111140)

Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-21 01:19

Title

libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data

Summary

Severity

6.9 (Medium)


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

6.1 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-21 01:19 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6925 records in the last 180 days details

References

4 references

URL	Tags
https://hackmd.io/@haind-pwn/libregf-value-data-o…	technical-descriptionexploit
https://github.com/libyal/libregf/blob/1a4bd85648…	technical-description
https://github.com/libyal/libregf	product
https://www.vulncheck.com/advisories/libregf-thro…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
libyal	libregf	Affected: 0 , ≤ 20260526 (custom)

Date Public

2026-10-15 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-2026-111140",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-21T01:19:30.510964Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-21T01:19:40.902Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/libyal/libregf",
          "defaultStatus": "unaffected",
          "product": "libregf",
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          "vendor": "libyal",
          "versions": [
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              "version": "0",
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            }
          ]
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      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-15T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 REGF hive with a value data cell ending its hive bin to leak adjacent heap bytes or crash parsers like regfexport and plaso."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "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:L/VI:N/VA:H/SC:N/SI:N/SA:N",
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            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
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            "attackVector": "LOCAL",
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            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
            "version": "3.1"
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      "problemTypes": [
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          "descriptions": [
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        },
        {
          "tags": [
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          "url": "https://github.com/libyal/libregf"
        },
        {
          "name": "VulnCheck Advisory: libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data",
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data"
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  "cveMetadata": {
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    "datePublished": "2026-10-15T18:57:32.622Z",
    "dateReserved": "2026-10-15T17:03:56.493Z",
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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.

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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