Vulnerability in Zephyrproject-Rtos Zephyr

CVE-2025-12890

Improper handling of malformed Connection Request with the interval set to be 1 (which supposed to be illegal) and the chM 0x7CFFFFFFFF triggers a crash. The peripheral will not be connectable after it.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-12890: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-12890?
CVE-2025-12890 is a medium-severity vulnerability in Zephyrproject-Rtos Zephyr, classified under CWE-703. CVSS score: 6.5/10. Published 2025-11-07.
How severe is CVE-2025-12890?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-12890 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.