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CVE Record

CVE-2020-10283: RVD#3317: MAVLink version handshaking allows for an attacker to bypass authentication

The Micro Air Vehicle Link (MAVLink) protocol presents authentication mechanisms on its version 2.0 however according to its documentation, in order to maintain backwards compatibility, GCS and autopilot negotiate the version via the AUTOPILOT_VERSION message. Since this negotiation depends on the answer, an attacker may craft packages in a way that hints the autopilot to adopt version 1.0 of MAVLink for the communication. Given the lack of authentication capabilities in such version of MAVLink (refer to CVE-2020-10282), attackers may use this method to bypass authentication capabilities and interact with the autopilot directly.

HighCVSS 8.1Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

MAVLink 2.0 includes authentication, but this CVE describes a downgrade path during version negotiation. If affected PX4 MAVLink communication can be reached, an attacker may push the autopilot toward MAVLink 1.0, which lacks those authentication capabilities, creating a serious control-channel trust issue.

Executive priority

High priority for organizations operating PX4 or MAVLink-connected vehicles in production, safety-sensitive, or externally reachable environments. The business risk is unauthorized interaction with autopilot communications, but the source evidence does not confirm active exploitation or name a patch.

Technical view

CWE-288 authentication bypass in MAVLink version handshaking. The AUTOPILOT_VERSION negotiation can allegedly be influenced with crafted packets so the autopilot adopts MAVLink 1.0. The source says this bypasses MAVLink 2.0 authentication and may allow direct autopilot interaction. CVSS 3.0 is 8.1, high, with high confidentiality, integrity, and availability impact.

Likely exposure

Likely exposure is limited to systems using the listed affected product, PX4 MAVLink 2.0, where MAVLink negotiation is reachable. The source bundle does not identify exact PX4 firmware versions, vehicle models, transports, or deployment conditions, so asset-level exposure requires local inventory review.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation evidence. Exploitation is described as high complexity but requires no privileges or user interaction. Treat reachable MAVLink control channels as higher risk until vendor guidance confirms downgrade behavior is addressed.

Researcher notes

The record points to RVD issue 3316 while the title references RVD#3317, so source linkage appears limited. Do not assume broader MAVLink implementations are affected beyond the listed PX4 MAVLink 2.0 entry without additional vendor evidence.

Mitigation direction

  • Check PX4 and MAVLink vendor guidance for affected versions and fixes.
  • Restrict MAVLink access to trusted control stations and networks only.
  • Disable or avoid unauthenticated MAVLink 1.0 compatibility where supported.
  • Review segmentation, telemetry links, and ground-control connectivity paths.
  • Prioritize remediation for operational UAV or robotic systems.

Validation and detection

  • Inventory systems using PX4 MAVLink 2.0 communication.
  • Confirm whether MAVLink 1.0 fallback or downgrade compatibility is enabled.
  • Verify MAVLink endpoints are not exposed to untrusted networks.
  • Review vendor advisories for fixed versions or configuration guidance.
  • Document compensating controls for systems awaiting vendor confirmation.
Prepared
Confidence
medium
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-288: Exact CWE lookup

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cve · low confidence lookup

CVE-2020-10283 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.1 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.1CVSS 3.0HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.1High
CVSS 3.0 vector shape for CVE-2020-10283Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
PX4MAVLink2.0Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-288 · source CWE mapping

Authentication Bypass Using an Alternate Path or Channel

Authentication Bypass Using an Alternate Path or Channel represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.