Technology · Zephyr Project
Zephyr Project Zephyr OS vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 25 vulnerabilities in Zephyr Project Zephyr OS: 0 in the last 7 days and 11 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-13216, was published on 25 August 2026.
- Last 7 days
- 0
- Last 90 days
- 11
- Critical, all time
- 0
- Exploited in the wild
- 0
About Zephyr Project Zephyr OS
A small, scalable real-time operating system (RTOS) optimized for resource-constrained devices.
Latest Zephyr Project Zephyr OS vulnerabilities
- 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- CVE-2026-10687: Zephyr OS withdrawn vulnerability in unreleased development codeinfoCVSS 0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
- CVE-2026-5068: Zephyr OS out-of-bounds write in Bluetooth L2CAP LE CoChighCVSS 7.6
- CVE-2026-5589: Zephyr RTOS integer underflow in Bluetooth Mesh solicitation handlinginfoCVSS 8.8
- CVE-2026-5071: Zephyr RTOS out-of-bounds read in SocketCAN zcan_sendto_ctxmediumCVSS 6.1
- CVE-2026-5072: Zephyr RTOS bitwise shift vulnerability in PTP subsysteminfoCVSS 6.5
- CVE-2026-1681: Zephyr RTOS stack overflow via ICMP ping to self in net shellmediumCVSS 6.1EPSS 0.1%
- CVE-2026-5590: Zephyr RTOS NULL pointer dereference in TCP stackmediumCVSS 6.4EPSS 0.2%
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-2026-5068: 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-2026-10677: Zephyr OS kernel heap memory leak in z_vrfy_k_pollmediumCVSS 6.5
- CVE-2026-5590: Zephyr RTOS NULL pointer dereference in TCP stackmediumCVSS 6.4EPSS 0.2%
- CVE-2026-10660: Zephyr OS Bluetooth BAP Broadcast Assistant out-of-bounds writemediumCVSS 6.4
- CVE-2026-10635: Zephyr OS use-after-free in Xtensa MMU page-table managementmediumCVSS 6.3
- CVE-2026-10648: Zephyr OS NULL pointer dereference in MCUmgr serial transportmediumCVSS 6.2
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 3 | 0 | |
| 6 Jul 2026 | 3 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 2 | 0 | |
| 27 Jul 2026 | 1 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 1 | 0 | |
| 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 |
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, 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, 26 September 2026.