Zephyr
CVE-2025-1673
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Lifecycle Timeline
2DescriptionCVE.org
A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation.
AnalysisAI
A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation. Affected products include: Zephyrproject Zephyr.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.
Buffer overflow in Zephyr RTOS dns_unpack_name() function causing OOB writes. PoC available.
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Memory corruption and denial of service in Zephyr RTOS (v4.0.0 through v4.4.0) arises in the BSD-sockets getaddrinfo() i
Buffer overflow in Zephyr RTOS eswifi socket offload driver allows authenticated local attackers to corrupt kernel memor
Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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