Is CVE-2023-30546 actively exploited?

No active exploitation of CVE-2023-30546 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-30546 be exploited remotely?

Yes. CVE-2023-30546 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-30546?

CVE-2023-30546 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2023-30546

HIGH

CVE-2023-30546

CWE-125Published: April 26, 2023· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Contiki-NG is an operating system for Internet of Things devices. An off-by-one error can be triggered in the Antelope database management system in the Contiki-NG operating system in versions 4.8 and prior. The problem exists in the Contiki File System (CFS) backend for the storage of data (file os/storage/antelope/storage-cfs.c). In the functions `storage_get_index` and `storage_put_index`, a buffer for merging two strings is allocated with one byte less than the maximum size of the merged strings, causing subsequent function calls to the cfs_open function to read from memory beyond the buffer size. The vulnerability has been patched in the "develop" branch of Contiki-NG, and is expected to be included in the next release. As a workaround, the problem can be fixed by applying the patch in Contiki-NG pull request #2425.

NVD Source

Technical Analysis

CVE-2023-30546 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.