CVE-2026-112007 (GCVE-0-2026-112007)

Vulnerability from cvelistv5 – Published: 2026-10-18 11:38 – Updated: 2026-10-18 11:38
VLAI
Title
Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader
Summary
Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in fmt_ult_load_song() in fmt/ult.c that fails to clamp the one-byte sample count to MAX_SAMPLES. Attackers can supply a crafted .ult module that overwrites the instruments pointer array, causing csf_destroy() to free attacker-chosen pointers and crash the application.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/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:N/I:L/A:H
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6463 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
schismtracker Schism Tracker Affected: 0 , ≤ 20260524 (custom)
    cpe:2.3:a:schismtracker:schism_tracker:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-17 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

{
  "containers": {
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        {
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          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/schismtracker/schismtracker",
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          "repo": "https://github.com/schismtracker/schismtracker",
          "vendor": "schismtracker",
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              "status": "affected",
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        }
      ],
      "metrics": [
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            "userInteraction": "REQUIRED",
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            "version": "3.1"
          },
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      "problemTypes": [
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          "descriptions": [
            {
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              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-10-18T11:38:30.590Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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          "url": "https://hackmd.io/@haindpwn/schismtracker-ult-sample-count-oob-write"
        },
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          "tags": [
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          "url": "https://github.com/schismtracker/schismtracker/blob/74215ae300b555928332e03152dfcdc898f96ca6/fmt/ult.c#L319-L330"
        },
        {
          "tags": [
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          "url": "https://github.com/schismtracker/schismtracker"
        },
        {
          "name": "VulnCheck Advisory: Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader",
          "tags": [
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          ],
          "url": "https://www.vulncheck.com/advisories/schism-tracker-through-20260524-heap-out-of-bounds-write-via-ult-loader"
        }
      ],
      "title": "Schism Tracker through 20260524 Heap Out-of-Bounds Write via ULT Loader",
      "x_generator": {
        "engine": "vulncheck-endgame"
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-112007",
    "datePublished": "2026-10-18T11:38:30.590Z",
    "dateReserved": "2026-10-18T01:23:41.645Z",
    "dateUpdated": "2026-10-18T11:38:30.590Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-19",
      "epss": "0.0013",
      "percentile": "0.02326"
    },
    "nvd": {
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
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            "value": "Schism Tracker through 20260524 contains a heap out-of-bounds write vulnerability in fmt_ult_load_song() in fmt/ult.c that fails to clamp the one-byte sample count to MAX_SAMPLES. Attackers can supply a crafted .ult module that overwrites the instruments pointer array, causing csf_destroy() to free attacker-chosen pointers and crash the application."
          }
        ],
        "id": "CVE-2026-112007",
        "lastModified": "2026-10-18T12:17:13.097",
        "metrics": {
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          "cvssMetricV40": [
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                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
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                "attackVector": "LOCAL",
                "availabilityRequirement": "NOT_DEFINED",
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                "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": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
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      "cve": "CVE-2026-112007",
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      "product_status:known_not_affected": "1",
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      "title": "schismtracker: Schism Tracker: Denial of Service via crafted ULT module file",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112007.json",
      "version": "3"
    }
  }
}



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