Vulnerability-Lookup

GHSA-CX2W-PW8J-8RVM

Vulnerability from github – Published: 2026-11-03 21:32 – Updated: 2026-11-03 21:32

Details

TinyUSB through 0.21.0, fixed in commit e85c2b8, contains an out-of-bounds write vulnerability in the MTP device class helper mtp_container_get_string() in src/class/mtp/mtp.h that allows a malicious USB host to corrupt adjacent memory by supplying a crafted MTP string with an unbounded character count. Attackers can exploit the unchecked memcpy operation copying up to 510 bytes into a fixed-size destination buffer to achieve code execution or cause a denial of service on the TinyUSB MTP device.

Severity

6.8 (Medium)


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

7.0 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-61495"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-03T21:17:42Z",
    "severity": "HIGH"
  },
  "details": "TinyUSB through 0.21.0, fixed in commit e85c2b8, contains an out-of-bounds write vulnerability in the MTP device class helper mtp_container_get_string() in src/class/mtp/mtp.h that allows a malicious USB host to corrupt adjacent memory by supplying a crafted MTP string with an unbounded character count. Attackers can exploit the unchecked memcpy operation copying up to 510 bytes into a fixed-size destination buffer to achieve code execution or cause a denial of service on the TinyUSB MTP device.",
  "id": "GHSA-cx2w-pw8j-8rvm",
  "modified": "2026-11-03T21:32:29Z",
  "published": "2026-11-03T21:32:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61495"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hathach/tinyusb/commit/e85c2b8affa1efbf00d398d59e7a87d3e61cc4a9"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/tinyusb-out-of-bounds-write-via-mtp-container-get-string"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-61495 (GCVE-0-2026-61495)

Vulnerability from cvelistv5 – Published: 2026-11-03 20:15 – Updated: 2026-11-03 22:39 X_Open Source

Title

TinyUSB 0.21.0 Out-of-Bounds Write via mtp_container_get_string()

Summary

Severity

7 (High)


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

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-03 22:36 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7402 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/hathach/tinyusb/commit/e85c2b8…	issue-trackingpatch
https://www.vulncheck.com/advisories/tinyusb-out-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
hathach	TinyUSB	Affected: 0 , ≤ 0.21.0 (semver)

Date Public

2026-10-01 00:00

Credits

Shukhratbek Uraiimov

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-61495",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-03T22:36:40.400955Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-11-03T22:39:43.266Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/hathach/tinyusb",
          "product": "TinyUSB",
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            }
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      "credits": [
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          "value": "Shukhratbek Uraiimov"
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      "descriptions": [
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          "lang": "en",
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "HIGH",
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            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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          "descriptions": [
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      "references": [
        {
          "name": "Patch Commit",
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        },
        {
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    "datePublished": "2026-11-03T20:15:11.817Z",
    "dateReserved": "2026-07-10T15:43:36.625Z",
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    "state": "PUBLISHED"
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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.
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