Vulnerability-Lookup

CVE-2026-85436 (GCVE-0-2026-85436)

Vulnerability from cvelistv5 – Published: 2026-09-03 22:38 – Updated: 2026-09-04 13:40

Title

MOOS essential-moos through 10.0.1 pMOOSBridge Heap Corruption via Negative UDP Length

Summary

MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to trigger an oversized memcpy operation that writes past the destination buffer, causing heap corruption and denial of service.

Severity

8.7 (High)


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

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 13:28 UTC

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/themoos/essential-moos/pull/21	issue-trackingpatch
https://github.com/themoos/essential-moos/commit/…	patch
https://github.com/themoos/essential-moos	product
https://github.com/themoos/essential-moos/blob/b8…	technical-description
https://www.vulncheck.com/advisories/moos-essenti…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
themoos	essential-moos	Affected: 0 , ≤ 10.0.1 (custom)	guessed

Date Public

2026-09-02 00:00

Credits

Vlatko Kosturjak

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-85436

Vulnerability from fkie_nvd - Published: 2026-09-03 23:17 - Updated: 2026-09-04 14:17

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/themoos/essential-moos
	disclosure@vulncheck.com	https://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pMOOSBridge/MOOSUDPLink.cpp#L171
	disclosure@vulncheck.com	https://github.com/themoos/essential-moos/commit/613175fcf63fb9c6c5329c4ec57c2d18588b33e2
	disclosure@vulncheck.com	https://github.com/themoos/essential-moos/pull/21
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pmoosbridge-heap-corruption-via-negative-udp-length

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    }
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  "lastModified": "2026-09-04T14:17:22.017",
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  ]
}

GHSA-FJ6H-5WVF-8FJ2

Vulnerability from github – Published: 2026-09-04 00:31 – Updated: 2026-09-04 00:31

Details

Severity

7.5 (High)


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

8.7 (High)


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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-85436"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T23:17:22Z",
    "severity": "HIGH"
  },
  "details": "MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets to the configured UDPListen port to trigger an oversized memcpy operation that writes past the destination buffer, causing heap corruption and denial of service.",
  "id": "GHSA-fj6h-5wvf-8fj2",
  "modified": "2026-09-04T00:31:08Z",
  "published": "2026-09-04T00:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85436"
    },
    {
      "type": "WEB",
      "url": "https://github.com/themoos/essential-moos/pull/21"
    },
    {
      "type": "WEB",
      "url": "https://github.com/themoos/essential-moos/commit/613175fcf63fb9c6c5329c4ec57c2d18588b33e2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/themoos/essential-moos"
    },
    {
      "type": "WEB",
      "url": "https://github.com/themoos/essential-moos/blob/b897ea86dba8b61412dc48ac0cfb5ff34cdaf5f6/Essentials/pMOOSBridge/MOOSUDPLink.cpp#L171"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/moos-essential-moos-through-10.0.1-pmoosbridge-heap-corruption-via-negative-udp-length"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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"
    }
  ]
}

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.

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.

Action not permitted

CVE-2026-85436 (GCVE-0-2026-85436)

FKIE_CVE-2026-85436

GHSA-FJ6H-5WVF-8FJ2

Tags

Sightings

Nomenclature