CVE-2026-24800 (GCVE-0-2026-24800)

Vulnerability from cvelistv5 – Published: 2026-01-27 08:33 – Updated: 2026-01-27 17:02
VLAI
Title
A heap-based buffer over-read or buffer overflow in tildearrow/furnace
Summary
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:L/U:Red
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 17:02 UTC
CWE
  • CWE-787 - Out-of-bounds Write
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
GovTech CSG CNA
CNA scorecard – unranked: 0 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
tildearrow furnace Affected: 0 , < 0.6.8.3 (git)
guessed Create a notification for this product.
Credits
TITAN Team (titancaproject@gmail.com)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-24800",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T17:02:10.616812Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-27T17:02:21.459Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/tildearrow/furnace",
          "defaultStatus": "unaffected",
          "modules": [
            "extern/zlib"
          ],
          "product": "furnace",
          "programFiles": [
            "inflate.c"
          ],
          "vendor": "tildearrow",
          "versions": [
            {
              "lessThan": "0.6.8.3",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "TITAN Team (titancaproject@gmail.com)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Out-of-bounds Write, Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in tildearrow furnace (extern/zlib modules).\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003einflate.C\u003c/tt\u003e.\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "Out-of-bounds Write, Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "USER",
            "Safety": "NEGLIGIBLE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "RED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "DIFFUSE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:L/U:Red",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "LOW"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T08:33:16.882Z",
        "orgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
        "shortName": "GovTech CSG"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/tildearrow/furnace/pull/2471"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "A heap-based buffer over-read or buffer overflow in tildearrow/furnace",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
    "assignerShortName": "GovTech CSG",
    "cveId": "CVE-2026-24800",
    "datePublished": "2026-01-27T08:33:16.882Z",
    "dateReserved": "2026-01-27T08:18:43.268Z",
    "dateUpdated": "2026-01-27T17:02:21.459Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-24800",
      "date": "2026-10-17",
      "epss": "0.00298",
      "percentile": "0.21044"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://github.com/tildearrow/furnace",
                "defaultStatus": "unaffected",
                "modules": [
                  "extern/zlib"
                ],
                "product": "furnace",
                "programFiles": [
                  "inflate.c"
                ],
                "vendor": "tildearrow",
                "versions": [
                  {
                    "lessThan": "0.6.8.3",
                    "status": "affected",
                    "version": "0",
                    "versionType": "git"
                  }
                ]
              }
            ],
            "source": "cve_disclosure@tech.gov.sg"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Out-of-bounds Write, Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C."
          },
          {
            "lang": "es",
            "value": "Escritura fuera de l\u00edmites, Copia de b\u00fafer sin verificar el tama\u00f1o de la entrada (\u0027Desbordamiento de b\u00fafer cl\u00e1sico\u0027) vulnerabilidad en tildearrow furnace (m\u00f3dulos extern/zlib). Esta vulnerabilidad est\u00e1 asociada con los archivos de programa inflate.C."
          }
        ],
        "id": "CVE-2026-24800",
        "lastModified": "2026-06-17T10:23:36.730",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "YES",
                "Recovery": "USER",
                "Safety": "NEGLIGIBLE",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 10.0,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "RED",
                "subAvailabilityImpact": "HIGH",
                "subConfidentialityImpact": "HIGH",
                "subIntegrityImpact": "HIGH",
                "userInteraction": "NONE",
                "valueDensity": "DIFFUSE",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:L/U:Red",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "LOW"
              },
              "source": "cve_disclosure@tech.gov.sg",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-24800",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T17:02:10.616812Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-27T09:15:49.920",
        "references": [
          {
            "source": "cve_disclosure@tech.gov.sg",
            "url": "https://github.com/tildearrow/furnace/pull/2471"
          }
        ],
        "sourceIdentifier": "cve_disclosure@tech.gov.sg",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-120"
              },
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "cve_disclosure@tech.gov.sg",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-28T07:21:59+00:00",
      "cve": "CVE-2026-24800",
      "id": "CVE-2026-24800",
      "initial_release_date": "2026-01-27T08:33:16.882000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tildearrow: furnace: A heap-based buffer over-read or buffer overflow in tildearrow/furnace",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24800.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-24800",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-27T17:02:10.616812Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-27T17:02:17.596Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://github.com/tildearrow/furnace",
              "defaultStatus": "unaffected",
              "modules": [
                "extern/zlib"
              ],
              "product": "furnace",
              "programFiles": [
                "inflate.c"
              ],
              "vendor": "tildearrow",
              "versions": [
                {
                  "lessThan": "0.6.8.3",
                  "status": "affected",
                  "version": "0",
                  "versionType": "git"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "TITAN Team (titancaproject@gmail.com)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Out-of-bounds Write, Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in tildearrow furnace (extern/zlib modules).\u003cp\u003e This vulnerability is associated with program files \u003ctt\u003einflate.C\u003c/tt\u003e.\u003cbr\u003e\u003c/p\u003e"
                }
              ],
              "value": "Out-of-bounds Write, Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "YES",
                "Recovery": "USER",
                "Safety": "NEGLIGIBLE",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "baseScore": 10,
                "baseSeverity": "CRITICAL",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "RED",
                "subAvailabilityImpact": "HIGH",
                "subConfidentialityImpact": "HIGH",
                "subIntegrityImpact": "HIGH",
                "userInteraction": "NONE",
                "valueDensity": "DIFFUSE",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:L/U:Red",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "LOW"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-787",
                  "description": "CWE-787 Out-of-bounds Write",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-120",
                  "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-27T08:33:16.882Z",
            "orgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
            "shortName": "GovTech CSG"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/tildearrow/furnace/pull/2471"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "A heap-based buffer over-read or buffer overflow in tildearrow/furnace",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1a37b84a-8e51-4525-b3d6-87e2fae01dbd",
        "assignerShortName": "GovTech CSG",
        "cveId": "CVE-2026-24800",
        "datePublished": "2026-01-27T08:33:16.882Z",
        "dateReserved": "2026-01-27T08:18:43.268Z",
        "dateUpdated": "2026-01-27T17:02:21.459Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    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.