CVE-2026-1579 json
PX4 Autopilot Missing authentication for critical function
published 7mo ago modified 3mo ago also EUVD-2026-17614
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
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cisa ICSA-26-090-02 updated cvss 9.8
PX4 Autopilot
-
PX4 Autopilot v1.16.0_SITL_latest_stableaffected: mitigation “Message signing configuration documentation can be found at https://docs.px4.io/main/en/mavlink/message_signing.” docs.px4.io
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 7mo ago
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | 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 |
Affected products
- PX4 Autopilot
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
docs.px4.io
/main/en/mavlink/security_hardening
product
-
docs.px4.io
/main/en/mavlink/message_signing
product
-
cisa.gov
/news-events/ics-advisories/icsa-26-090-02
third-party-advisory, us-government-resource
-
github.com
/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.json
third-party-advisory
Sources
- CVE List CVE-2026-1579
- NVD CVE-2026-1579
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.