Zephyr vulnerabilitiesRanked by how likely they are to be used.

Product66 versions
The short answer

Zephyr is made by Zephyrproject. We track 115 published vulnerabilities in it, across 66 versions. None of them is on the list of flaws known to be exploited today. If you run Zephyr, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Zephyr vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Zephyr's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Zephyr flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 3.4%

    The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution.

    CVSS9.8Published5 Jun 2020
  2. 2.9%

    In the Zephyr Project MQTT code, improper bounds checking can result in memory corruption and possibly remote code execution.

    CVSS9.8Published5 Jun 2020
  3. 2.9%

    An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution.

    CVSS9.8Published5 Jun 2020
  4. 2.3%

    A malformed JSON payload that is received from an UpdateHub server may trigger memory corruption in the Zephyr OS.

    CVSS9.8Published11 May 2020
  5. 2.3%

    Buffer overflow in Zephyr USB DFU DNLOAD.

    CVSS9.8Published5 Oct 2021
  6. 1.8%

    A remote adversary with the ability to send arbitrary CoAP packets to be parsed by Zephyr is able to cause a denial of service.

    CVSS7.5Published5 Jun 2020
  7. 1.7%

    A buffer overflow has been found in the Zephyr Project's getaddrinfo() implementation in 1.9.0 and 1.10.0.

    CVSS9.8Published12 Apr 2019
  8. 1.7%

    zephyr-rtos version 1.12.0 contains a NULL base pointer reference vulnerability in sys_ring_buf_put(), sys_ring_buf_get() that can result in CPU Page Fault (error code 0x00000010).

    CVSS9.8Published6 Sep 2018
  9. 1.6%

    In updatehub_probe, right after JSON parsing is complete, objects\[1] is accessed from the output structure in two different places.

    CVSS6.5Published11 May 2020
  10. 1.3%

    Potential buffer overflow vulnerability in the Zephyr CAN bus subsystem

    CVSS9.8Published6 Oct 2023
Precursor Intelligence

Running Zephyr? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

Free plan, no card needed. Nothing to install.

FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 115 published vulnerabilities listed under the name Zephyr, across 66 versions.

None of Zephyr's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Zephyr. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.