Vulnerability-Lookup

GHSA-VCQ6-MMFW-5XM3

Vulnerability from github – Published: 2026-03-31 21:31 – Updated: 2026-03-31 21:31

Details

The MAVLink communication protocol does not require cryptographic authentication by default. When MAVLink 2.0 message signing is not enabled, any message -- including SERIAL_CONTROL, which provides interactive shell access -- can be sent by an unauthenticated party with access to the MAVLink interface. PX4 provides MAVLink 2.0 message signing as the cryptographic authentication mechanism for all MAVLink communication. When signing is enabled, unsigned messages are rejected at the protocol level.

Severity

9.8 (Critical)


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

9.3 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-1579"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-31T21:16:27Z",
    "severity": "CRITICAL"
  },
  "details": "The MAVLink communication protocol does not require cryptographic \nauthentication by default. When MAVLink 2.0 message signing is not \nenabled, any message -- including SERIAL_CONTROL, which provides \ninteractive shell access -- can be sent by an unauthenticated party with\n access to the MAVLink interface. PX4 provides MAVLink 2.0 message \nsigning as the cryptographic authentication mechanism for all MAVLink \ncommunication. When signing is enabled, unsigned messages are rejected \nat the protocol level.",
  "id": "GHSA-vcq6-mmfw-5xm3",
  "modified": "2026-03-31T21:31:19Z",
  "published": "2026-03-31T21:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1579"
    },
    {
      "type": "WEB",
      "url": "https://docs.px4.io/main/en/mavlink/message_signing"
    },
    {
      "type": "WEB",
      "url": "https://docs.px4.io/main/en/mavlink/security_hardening"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-02"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/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-2026-1579 (GCVE-0-2026-1579)

Vulnerability from cvelistv5 – Published: 2026-03-31 20:20 – Updated: 2026-03-31 20:36

Title

PX4 Autopilot Missing authentication for critical function

Summary

Severity

9.3 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-31 20:35 UTC

CWE

CWE-306

Assigner

icscert icscert root Scorecard

References

4 references

URL	Tags
https://docs.px4.io/main/en/mavlink/security_hardening
https://docs.px4.io/main/en/mavlink/message_signing
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

1 product

Vendor	Product	Version
PX4	Autopilot	Affected: v1.16.0 SITL

Credits

Dolev Aviv of Cyviation reported this vulnerability to CISA.

Show details on NVD website

JSON

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  "containers": {
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        "metrics": [
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              "content": {
                "id": "CVE-2026-1579",
                "options": [
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                  },
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T20:35:56.040324Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-03-31T20:36:09.044Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        }
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              "type": "text/html",
              "value": "The MAVLink communication protocol does not require cryptographic \nauthentication by default. When MAVLink 2.0 message signing is not \nenabled, any message -- including SERIAL_CONTROL, which provides \ninteractive shell access -- can be sent by an unauthenticated party with\n access to the MAVLink interface. PX4 provides MAVLink 2.0 message \nsigning as the cryptographic authentication mechanism for all MAVLink \ncommunication. When signing is enabled, unsigned messages are rejected \nat the protocol level."
            }
          ],
          "value": "The MAVLink communication protocol does not require cryptographic \nauthentication by default. When MAVLink 2.0 message signing is not \nenabled, any message -- including SERIAL_CONTROL, which provides \ninteractive shell access -- can be sent by an unauthenticated party with\n access to the MAVLink interface. PX4 provides MAVLink 2.0 message \nsigning as the cryptographic authentication mechanism for all MAVLink \ncommunication. When signing is enabled, unsigned messages are rejected \nat the protocol level."
        }
      ],
      "metrics": [
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          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
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            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      "providerMetadata": {
        "dateUpdated": "2026-03-31T20:20:06.506Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
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      "references": [
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      ],
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          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003ePX4 recommends enabling MAVLink 2.0 message signing as the \nauthentication mechanism for all non\u2011USB communication links. PX4 has \npublished a security hardening guide for integrators and manufacturers \nat\u0026nbsp;\u003cbr\u003e\u003ca href=\"https://docs.px4.io/main/en/mavlink/security_hardening\" title=\"(opens in a new window)\"\u003ehttps://docs.px4.io/main/en/mavlink/security_hardening\u003c/a\u003e\u003c/p\u003e\u003cp\u003e\u003cbr\u003eMessage signing configuration documentation can be found at\u0026nbsp;\u003cbr\u003e\u003ca href=\"https://docs.px4.io/main/en/mavlink/message_signing\" title=\"(opens in a new window)\"\u003ehttps://docs.px4.io/main/en/mavlink/message_signing\u003c/a\u003e\u003c/p\u003e"
            }
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        }
      ],
      "source": {
        "advisory": "ICSA-26-090-02",
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      "title": "PX4 Autopilot Missing authentication for critical function",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-VCQ6-MMFW-5XM3

CVE-2026-1579 (GCVE-0-2026-1579)

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Nomenclature

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