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CVE-2026-32706— PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet

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之前版本存在缓冲区错误漏洞，该漏洞源于crsf_rc解析器接受超长可变长度已知数据包并将其复制到固定缓冲区时未进行边界检查，可能导致内存损坏和PX4崩溃。

CVSS 7.1 · High EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-32706

Vulnerability Information
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Vulnerability Title
PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet
Source: CVE Program / CVE List V5
Vulnerability Description
PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, The crsf_rc parser accepts an oversized variable-length known packet and copies it into a fixed 64-byte global buffer without a bounds check. In deployments where crsf_rc is enabled on a CRSF serial port, an adjacent/raw-serial attacker can trigger memory corruption and crash PX4. This vulnerability is fixed in 1.17.0-rc2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
PX4-Autopilot 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于crsf_rc解析器接受超长可变长度已知数据包并将其复制到固定缓冲区时未进行边界检查，可能导致内存损坏和PX4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-2026-32706

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III. Intelligence Information for CVE-2026-32706

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Vendor Advisories for CVE-2026-32706 (1)

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

CVE-2026-32708 7.8 HIGH Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)
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-120

V. Comments for CVE-2026-32706

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