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CVE-2026-26742: PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Perio

38
Routine
HIGH 8.1UPGRADE

CVE-2026-26742 is a high-severity flaw (CVSS 8.1) affecting px4 drone autopilot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Period" logic. The system incorrectly applies the in-air emergency re-arm logic to ground scenarios. If a pilot switches to Manual mode and re-arms within 5 seconds (default configuration) of an automatic landing, the system bypasses all pre-flight safety checks, including the throttle threshold check. This allows for an immediate high-thrust

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.1 (High)
Attack vectorAdjacent network
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.3% (top 82%)
CISA exploited listNo
WeaknessCWE-862
Published2026-03-10
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: dronecode

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

dronecode px4 drone autopilot UPGRADE
Affected: >= 1.12.0 and < 1.16.0
Fixed in: 1.16.0
Safe to downgrade to: a release before 1.12.0
1. Check installed version
apt-cache policy px4-drone-autopilot || rpm -q px4-drone-autopilot || px4-drone-autopilot --version
2. UPGRADE to 1.16.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade px4-drone-autopilot
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade px4-drone-autopilot
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 1.12.0 (Debian / Ubuntu)
apt-cache madison px4-drone-autopilot sudo apt install px4-drone-autopilot=<VERSION_BEFORE_1.12.0> sudo apt-mark hold px4-drone-autopilot
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list px4-drone-autopilot sudo dnf downgrade px4-drone-autopilot-<VERSION_BEFORE_1.12.0> sudo dnf versionlock add px4-drone-autopilot
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-26742?

px4 drone autopilot: upgrade to 1.16.0. Exact commands for each OS are on this page.

Is CVE-2026-26742 being exploited?

CVE-2026-26742 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-26742 affect?

CVE-2026-26742 affects px4 drone autopilot. Severity is high (CVSS 8.1). PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Period" logic. The system incorrectly applies the in-air emergency re-arm logic to ground scenarios. If a pilot switches to Manual mode

How urgent is CVE-2026-26742?

Priority 38/100. High severity; Public exploit reference

Related CVEs

References

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