Technology · Zephyr Project
Zephyr Project Zephyr OS vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 31 vulnerabilities in Zephyr Project Zephyr OS: 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-85032, was published on 3 November 2026. 4 vulnerabilities in the last four weeks, up 100% on the four before (2).
- Last 7 days
- 0
- Last 90 days
- 7
- Critical, all time
- 0
- Exploited in the wild
- 0
About Zephyr Project Zephyr OS
Open source real-time operating system designed for embedded and IoT devices.
Latest Zephyr Project Zephyr OS vulnerabilities
- CVE-2026-85032: Zephyr MCTP over USB use-after-free in packet buffer handlingmediumCVSS 4.8
- CVE-2026-79979: Zephyr arm64 MMU TLB invalidation memory isolation bypasshighCVSS 7.8
- CVE-2026-76787: Zephyr UpdateHub firmware client NULL pointer dereference in CoAP probe parsingmediumCVSS 5.9
- CVE-2026-75084: CC1200 sub-GHz IEEE 802.15.4 driver buffer overflow in RX packet parsingmediumCVSS 6.8EPSS 0.3%
- CVE-2026-19739: Zephyr Bluetooth Link Layer memory leak in connection updatemediumCVSS 6.5EPSS 0.1%
- CVE-2026-19738: Zephyr Project Bluetooth Link Layer Control Procedure memory leak in CIS creationmediumCVSS 6.5EPSS 0.1%
- CVE-2026-13216: Zephyr virtio PCI driver stack buffer overflow in capability parsingmediumCVSS 6.1EPSS 0.2%
- CVE-2026-12364: Zephyr OS logging system-call validation bypasshighCVSS 8.4EPSS 0.2%
- CVE-2026-10683: Zephyr OS Synopsys DesignWare I2C driver denial of servicelowCVSS 2.4
- CVE-2026-10679: Zephyr OS divide by zero in DesignWare SPI driverlowCVSS 3.3
- CVE-2026-10677: Zephyr OS kernel heap memory leak in z_vrfy_k_pollmediumCVSS 6.5
- CVE-2026-10668: Zephyr OS Nuvoton NuMaker HSUSBD denial of service in USB driverlowCVSS 2.4
- CVE-2026-10666: Zephyr OS stack overflow in IPv4 and IPv6 address parsinghighCVSS 8.1
- CVE-2026-10660: Zephyr OS Bluetooth BAP Broadcast Assistant out-of-bounds writemediumCVSS 6.4
- CVE-2026-10657: Zephyr OS out-of-bounds read in DNS resolver mDNS checklowCVSS 3.7
- CVE-2026-8023: Zephyr RTOS path traversal in HTTP server static-filesystem handlerhighCVSS 7.5
- CVE-2026-10648: Zephyr OS NULL pointer dereference in MCUmgr serial transportmediumCVSS 6.2
- CVE-2026-10658: Zephyr OS denial of service in Bluetooth Host ISO receive pathhighCVSS 7.1
- CVE-2026-10645: Zephyr OS out-of-bounds read in ext2 directory-entry parsermediumCVSS 4.9
- CVE-2026-10687: Zephyr OS withdrawn vulnerability in unreleased development codeinfoCVSS 0
- CVE-2026-10639: Zephyr OS use-after-free in ICMPv4 echo request handlermediumCVSS 4.8
- CVE-2026-10637: Zephyr OS use-after-free in IPv6 MLD send pathmediumCVSS 5.9
- CVE-2026-10636: Zephyr OS use-after-free in IPv4 IGMP implementationlowCVSS 3.7
- CVE-2026-10635: Zephyr OS use-after-free in Xtensa MMU page-table managementmediumCVSS 6.3
- CVE-2026-10676: Zephyr OS unreachable defect in unreleased development codeinfoCVSS 0
Most severe Zephyr Project Zephyr OS vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-12364: Zephyr OS logging system-call validation bypasshighCVSS 8.4EPSS 0.2%
- CVE-2026-10666: Zephyr OS stack overflow in IPv4 and IPv6 address parsinghighCVSS 8.1
- CVE-2026-79979: Zephyr arm64 MMU TLB invalidation memory isolation bypasshighCVSS 7.8
- CVE-2026-5068: Zephyr OS out-of-bounds write in Bluetooth L2CAP LE CoChighCVSS 7.6
- CVE-2026-8023: Zephyr RTOS path traversal in HTTP server static-filesystem handlerhighCVSS 7.5
- CVE-2026-10658: Zephyr OS denial of service in Bluetooth Host ISO receive pathhighCVSS 7.1
- CVE-2026-75084: CC1200 sub-GHz IEEE 802.15.4 driver buffer overflow in RX packet parsingmediumCVSS 6.8EPSS 0.3%
- CVE-2026-19739: Zephyr Bluetooth Link Layer memory leak in connection updatemediumCVSS 6.5EPSS 0.1%
- CVE-2026-19738: Zephyr Project Bluetooth Link Layer Control Procedure memory leak in CIS creationmediumCVSS 6.5EPSS 0.1%
- CVE-2026-10677: Zephyr OS kernel heap memory leak in z_vrfy_k_pollmediumCVSS 6.5
Vulnerabilities per week
4 vulnerabilities in the last four weeks, up 100% on the four before (2). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 1 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 2 | 0 | |
| 12 Oct 2026 | 1 | 0 | |
| 19 Oct 2026 | 2 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 1 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Zephyr Project Zephyr OS vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/zephyr-os)<a href="https://junglewise.ai/threats/technologies/zephyr-os"><img src="https://junglewise.ai/threats/technologies/zephyr-os/badge.svg" alt="Zephyr Project Zephyr OS vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/zephyr-os.json, and this page as text at https://junglewise.ai/threats/technologies/zephyr-os.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Zephyr Project Zephyr OS vulnerabilities", https://junglewise.ai/threats/technologies/zephyr-os, 13 November 2026.