Vulnerability-Lookup

UBUNTU-CVE-2026-81880 (CVE-2026-81880)

Vulnerability from osv_ubuntu – Published: 2026-09-22 16:18 – Updated: 2026-09-22 16:18 – Source website

Details

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.

Severity

5.5 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-81880	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-81880	REPORT
	https://github.com/radareorg/radare2/security/adv…	REPORT
	https://github.com/radareorg/radare2/commit/87c78…	REPORT
	https://github.com/radareorg/radare2/releases/tag/6.2.0	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libradare2-0.9.6",
            "binary_version": "0.9.6-3.1ubuntu1"
          },
          {
            "binary_name": "libradare2-common",
            "binary_version": "0.9.6-3.1ubuntu1"
          },
          {
            "binary_name": "radare2",
            "binary_version": "0.9.6-3.1ubuntu1"
          },
          {
            "binary_name": "radare2-plugins",
            "binary_version": "0.9.6-3.1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "radare2",
        "purl": "pkg:deb/ubuntu/radare2@0.9.6-3.1ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.6-3.1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libradare2-2.3",
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libradare2-common",
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "radare2",
            "binary_version": "2.3.0+dfsg-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "radare2",
        "purl": "pkg:deb/ubuntu/radare2@2.3.0+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.0+dfsg-1",
        "2.0.0+dfsg-1",
        "2.1.0+dfsg-1",
        "2.3.0+dfsg-1",
        "2.3.0+dfsg-2",
        "2.3.0+dfsg-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libradare2-4.2.1",
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libradare2-common",
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "radare2",
            "binary_version": "4.2.1+dfsg-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "radare2",
        "purl": "pkg:deb/ubuntu/radare2@4.2.1+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.1+dfsg-5build1",
        "4.0.0+dfsg-1",
        "4.2.1+dfsg-1",
        "4.2.1+dfsg-2",
        "4.2.1+dfsg-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libradare2-5.0.0t64",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1"
          },
          {
            "binary_name": "libradare2-common",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1"
          },
          {
            "binary_name": "radare2",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "radare2",
        "purl": "pkg:deb/ubuntu/radare2@5.5.0+dfsg-1.1ubuntu3+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.5.0+dfsg-1ubuntu1",
        "5.5.0+dfsg-1.1ubuntu2",
        "5.5.0+dfsg-1.1ubuntu3",
        "5.5.0+dfsg-1.1ubuntu3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libradare2-6.0.0t64",
            "binary_version": "6.0.7+ds-1"
          },
          {
            "binary_name": "libradare2-common",
            "binary_version": "6.0.7+ds-1"
          },
          {
            "binary_name": "radare2",
            "binary_version": "6.0.7+ds-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "radare2",
        "purl": "pkg:deb/ubuntu/radare2@6.0.7+ds-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.9.8+dfsg-2",
        "6.0.4+dfsg-1",
        "6.0.7+ds-1"
      ]
    }
  ],
  "aliases": [],
  "details": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2\u0027s Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.",
  "id": "UBUNTU-CVE-2026-81880",
  "modified": "2026-09-22T16:18:00Z",
  "published": "2026-09-22T16:18:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-81880"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-81880"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"
    }
  ],
  "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-81880"
  ]
}

CVE-2026-81880 (GCVE-0-2026-81880)

Vulnerability from cvelistv5 – Published: 2026-09-22 15:09 – Updated: 2026-09-25 23:29

Title

radare2: Uncontrolled resource consumption in radare2 PEF loader

Summary

Severity

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 2026-09-25 23:29 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-834 - Excessive Iteration

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/radareorg/radare2/security/adv…	x_refsource_CONFIRM
https://github.com/radareorg/radare2/commit/87c78…	x_refsource_MISC
https://github.com/radareorg/radare2/releases/tag/6.2.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
radareorg	radare2	Affected: < 6.2.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81880",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-25T23:29:23.090514Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-25T23:29:33.839Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "radare2",
          "vendor": "radareorg",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2\u0027s Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-834",
              "description": "CWE-834: Excessive Iteration",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-22T15:09:48.887Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq"
        },
        {
          "name": "https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac"
        },
        {
          "name": "https://github.com/radareorg/radare2/releases/tag/6.2.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"
        }
      ],
      "source": {
        "advisory": "GHSA-fg6f-rj8g-25pq",
        "discovery": "UNKNOWN"
      },
      "title": "radare2: Uncontrolled resource consumption in radare2 PEF loader"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-81880",
    "datePublished": "2026-09-22T15:09:48.887Z",
    "dateReserved": "2026-08-27T17:48:42.122Z",
    "dateUpdated": "2026-09-25T23:29:33.839Z",
    "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.
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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.

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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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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UBUNTU-CVE-2026-81880 (CVE-2026-81880)

CVE-2026-81880 (GCVE-0-2026-81880)

Tags

Sightings

Nomenclature

Related by attack behaviour