CVE-2025-1674— Out of bounds read when unpacking DNS answers
Quick assessment
Affected
zephyrproject-rtos Zephyr
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.
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr 4.0及之前版本存在缓冲区错误漏洞，该漏洞源于输入验证不足，可能导致恶意或畸形数据包引发越界读取。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-1674
Vulnerability Information
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Vulnerability Title
Out of bounds read when unpacking DNS answers
Source: CVE Program / CVE List V5
Vulnerability Description
A lack of input validation allows for out of bounds reads caused by malicious or malformed packets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Zephyr 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zephyr是Zephyr开源的一个可扩展的实时操作系统 (RTOS)。 Zephyr 4.0及之前版本存在缓冲区错误漏洞，该漏洞源于输入验证不足，可能导致恶意或畸形数据包引发越界读取。
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 |
|---|---|---|---|---|
| zephyrproject-rtos | Zephyr | * ~ 4.0 | - |
|
II. Public POCs for CVE-2025-1674
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-1674 (1)
Same Patch Batch · zephyrproject-rtos · 2025-02-25 · 3 CVEs total
| CVE-2025-1673 | 8.2 HIGH | Out of bounds read when calling crc16_ansi and strlen in dns_validate_msg |
| CVE-2025-1675 | 8.2 HIGH | Out of bounds read in dns_copy_qname |
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V. Comments for CVE-2025-1674
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