GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2025-13397 (GCVE-0-2025-13397)

Vulnerability from cvelistv5 – Published: 2025-11-19 15:32 – Updated: 2025-11-19 16:48 X_Open Source
VLAI
Title
mrubyc alloc.c mrbc_raw_realloc null pointer dereference
Summary
A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-19 16:46 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a mrubyc Affected: 3.0
Affected: 3.1
Affected: 3.2
Affected: 3.3
Affected: 3.4
Credits
micromilo (VulDB User)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-13397",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-19T16:46:17.902745Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-19T16:48:37.028Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "mrubyc",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "3.0"
            },
            {
              "status": "affected",
              "version": "3.1"
            },
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "status": "affected",
              "version": "3.4"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "micromilo (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-404",
              "description": "Denial of Service",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-19T15:32:08.751Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-332925 | mrubyc alloc.c mrbc_raw_realloc null pointer dereference",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.332925"
        },
        {
          "name": "VDB-332925 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.332925"
        },
        {
          "name": "Submit #692130 | mrubyc 3.4 NULL Pointer Dereference",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.692130"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/mrubyc/mrubyc/issues/244"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/mrubyc/mrubyc/issues/244#issuecomment-3400382026"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-11-19T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-11-19T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-11-19T10:10:56.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "mrubyc alloc.c mrbc_raw_realloc null pointer dereference"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-13397",
    "datePublished": "2025-11-19T15:32:08.751Z",
    "dateReserved": "2025-11-19T09:05:40.304Z",
    "dateUpdated": "2025-11-19T16:48:37.028Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-13397",
      "date": "2026-09-17",
      "epss": "0.00143",
      "percentile": "0.0402"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-13397\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2025-11-19T16:15:47.347\",\"lastModified\":\"2026-06-17T08:34:04.370\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"n/a\",\"product\":\"mrubyc\",\"versions\":[{\"version\":\"3.0\",\"status\":\"affected\"},{\"version\":\"3.1\",\"status\":\"affected\"},{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"3.3\",\"status\":\"affected\"},{\"version\":\"3.4\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":3.3,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.8,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:S/C:N/I:N/A:P\",\"baseScore\":1.7,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.1,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-11-19T16:46:17.902745Z\",\"id\":\"CVE-2025-13397\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-404\"},{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:s-itoc:mruby\\\\/c:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.4\",\"matchCriteriaId\":\"768923AB-1A08-403F-8850-249E185A4F2C\"}]}]}],\"references\":[{\"url\":\"https://github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/mrubyc/mrubyc/issues/244\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://github.com/mrubyc/mrubyc/issues/244#issuecomment-3400382026\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://vuldb.com/?ctiid.332925\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Permissions Required\",\"VDB Entry\"]},{\"url\":\"https://vuldb.com/?id.332925\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://vuldb.com/?submit.692130\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-11-26T22:55:01+00:00",
      "cve": "CVE-2025-13397",
      "id": "CVE-2025-13397",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "mrubyc alloc.c mrbc_raw_realloc null pointer dereference",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-13397.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-13397\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-11-19T16:46:17.902745Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-11-19T16:46:22.280Z\"}}], \"cna\": {\"tags\": [\"x_open-source\"], \"title\": \"mrubyc alloc.c mrbc_raw_realloc null pointer dereference\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"micromilo (VulDB User)\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 3.3, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 3.3, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 1.7, \"vectorString\": \"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:OF/RC:C\"}}], \"affected\": [{\"vendor\": \"n/a\", \"product\": \"mrubyc\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0\"}, {\"status\": \"affected\", \"version\": \"3.1\"}, {\"status\": \"affected\", \"version\": \"3.2\"}, {\"status\": \"affected\", \"version\": \"3.3\"}, {\"status\": \"affected\", \"version\": \"3.4\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2025-11-19T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2025-11-19T01:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2025-11-19T10:10:56.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/?id.332925\", \"name\": \"VDB-332925 | mrubyc alloc.c mrbc_raw_realloc null pointer dereference\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/?ctiid.332925\", \"name\": \"VDB-332925 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/?submit.692130\", \"name\": \"Submit #692130 | mrubyc 3.4 NULL Pointer Dereference\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/mrubyc/mrubyc/issues/244\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/mrubyc/mrubyc/issues/244#issuecomment-3400382026\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/mrubyc/mrubyc/commit/009111904807b8567262036bf45297c3da8f1c87\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"NULL Pointer Dereference\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-404\", \"description\": \"Denial of Service\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2025-11-19T15:32:08.751Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-13397\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-19T16:48:37.028Z\", \"dateReserved\": \"2025-11-19T09:05:40.304Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2025-11-19T15:32:08.751Z\", \"assignerShortName\": \"VulDB\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.