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CVE-2026-32708— Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)

Quick assessment

Affected
PX4 PX4-Autopilot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PX4-Autopilot是PX4 Autopilot开源的一个无人机自动驾驶系统。 PX4-Autopilot 1.17.0-rc2之前版本存在安全漏洞，该漏洞源于Zenoh uORB订阅者直接从传入有效载荷长度分配栈可变长度数组时未进行边界检查，可能导致栈溢出和Zenoh桥接任务崩溃。

CVSS 7.8 · High EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-32708

Vulnerability Information
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Vulnerability Title
Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)
Source: CVE Program / CVE List V5
Vulnerability Description
PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the Zenoh uORB subscriber allocates a stack VLA directly from the incoming payload length without bounds. A remote Zenoh publisher can send an oversized fragmented message to force an unbounded stack allocation and copy, causing a stack overflow and crash of the Zenoh bridge task. This vulnerability is fixed in 1.17.0-rc2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
PX4-Autopilot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PX4-Autopilot是PX4 Autopilot开源的一个无人机自动驾驶系统。 PX4-Autopilot 1.17.0-rc2之前版本存在安全漏洞，该漏洞源于Zenoh uORB订阅者直接从传入有效载荷长度分配栈可变长度数组时未进行边界检查，可能导致栈溢出和Zenoh桥接任务崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PX4 PX4-Autopilot < 1.17.0-rc2 -

II. Public POCs for CVE-2026-32708

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III. Intelligence Information for CVE-2026-32708

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Vendor Advisories for CVE-2026-32708 (1)

Same Patch Batch · PX4 · 2026-03-13 · 7 CVEs total

CVE-2026-32706 7.1 HIGH PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known
CVE-2026-32705 6.8 MEDIUM PX4 autopilot BST Device Name Length Can Overflow Driver Buffer
CVE-2026-32709 5.4 MEDIUM PX4 Autopilot MAVLink FTP Unauthenticated Path Traversal (Arbitrary File Read/Write/Delete
CVE-2026-32724 5.3 MEDIUM PX4 autopilot has a heap Use-After-Free in MavlinkShell::available() via SERIAL_CONTROL Ra
CVE-2026-32707 5.2 MEDIUM PX4 autopilot has a stack buffer overflow in tattu_can due to unbounded memcpy in frame as
CVE-2026-32713 4.3 MEDIUM PX4 Autopilot MAVLink FTP Session Validation Logic Error Allows Operations on Invalid File

IV. Related Vulnerabilities

Same product: PX4-Autopilot
Same vendor: PX4
Same weakness: CWE-121

V. Comments for CVE-2026-32708

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