CVE-2021-34125: An issue discovered in Yuneec Mantis Q and PX4-Autopilot v 1.11.3 and below allow attacker to gain access to s

Q: How do I fix CVE-2021-34125?

px4 drone autopilot: upgrade to newer than 1.11.3; mantis q firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2021-34125 being exploited?

CVE-2021-34125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-34125 affect?

CVE-2021-34125 affects px4 drone autopilot, mantis q firmware. Severity is high (CVSS 7.5). An issue discovered in Yuneec Mantis Q and PX4-Autopilot v 1.11.3 and below allow attacker to gain access to sensitive information via various nuttx commands.

Q: How urgent is CVE-2021-34125?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADEMITIGATE

CVE-2021-34125 is a high-severity flaw (CVSS 7.5) affecting px4 drone autopilot, mantis q firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue discovered in Yuneec Mantis Q and PX4-Autopilot v 1.11.3 and below allow attacker to gain access to sensitive information via various nuttx commands.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-03-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dronecode · yuneec

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

Am I affected?

Timeline

2023-03-09 23:15 UTCPublished CVE record published
2026-06-17 03:55 UTCUpdated Record last modified

dronecode px4 drone autopilot UPGRADE

Affected: <= 1.11.3

Fixed in: newer than 1.11.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy px4-drone-autopilot || rpm -q px4-drone-autopilot || px4-drone-autopilot --version

2. UPGRADE to newer than 1.11.3 (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.

yuneec mantis q firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2021-34125?

px4 drone autopilot: upgrade to newer than 1.11.3; mantis q firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-34125 being exploited?

CVE-2021-34125 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-2021-34125 affect?

CVE-2021-34125 affects px4 drone autopilot, mantis q firmware. Severity is high (CVSS 7.5). An issue discovered in Yuneec Mantis Q and PX4-Autopilot v 1.11.3 and below allow attacker to gain access to sensitive information via various nuttx commands.

How urgent is CVE-2021-34125?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-15150 MEDIUM 5.3 UPGRADE A vulnerability was found in PX4 PX4-Autopilot up to 1.16.0
CVE-2026-32743 MEDIUM 6.5 UPGRADE PX4 is an open-source autopilot stack for drones and unmanned vehicles
CVE-2026-32724 MEDIUM 5.3 UPGRADE PX4 autopilot is a flight control solution for drones
CVE-2026-32713 MEDIUM 4.3 UPGRADE PX4 autopilot is a flight control solution for drones
CVE-2026-32709 MEDIUM 5.4 UPGRADE PX4 autopilot is a flight control solution for drones

References

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