How severe is CVE-2026-1579?

CVE-2026-1579 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-1579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1579?

CVE-2026-1579 affects Px4 Autopilot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1579?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-1579 have an EU (EUVD) identifier?

Yes. CVE-2026-1579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17614.

When was CVE-2026-1579 published?

CVE-2026-1579 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-1579

CVE-2026-1579 is a critical-severity vulnerability in Px4 Autopilot with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17614
Weakness: CWE-306
Affected product: Px4 Autopilot
Published: 2026-03-31
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-1579?: 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.
How severe is CVE-2026-1579?: CVE-2026-1579 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-1579 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1579?: CVE-2026-1579 affects Px4 Autopilot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1579?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-1579 have an EU (EUVD) identifier?: Yes. CVE-2026-1579 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17614.
When was CVE-2026-1579 published?: CVE-2026-1579 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:px4:autopilot:1.16.0:*:*:*:*:*:*:*

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