CVE-2025-1674 Out of bounds read when unpacking DNS answers
An attacker can cause out-of-bounds reads via malformed DNS packets, potentially leading to crashes or data exposure in Zephyr RTOS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-1674?
CVE-2025-1674 is a high-severity memory corruption vulnerability in Zephyrproject Zephyr, published on 25 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A lack of input validation allows for out of bounds reads caused by malicious or malformed packets.
Weakness: CWE-125
Which versions are affected by CVE-2025-1674?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2025-1674?
No fix has been published for CVE-2025-1674 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-1674 being exploited?
There is no known exploitation of CVE-2025-1674 in the wild and no public exploit code.
Other vulnerabilities in Zephyrproject Zephyr
- CVE-2026-5067 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
- CVE-2022-3806 Bluetooth HCI Error Handling Double Free
- CVE-2017-14199 Memory corruption in getaddrinfo
- CVE-2018-1000800 Null dereference in n/a
- CVE-2021-3329 DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Sources
Also known as GHSA-x975-8pgf-qh66.