CVE-2025-12035: zephyrproject-rtos zephyr Integer Overflow or Wraparound
CVSS: 6.5v3.1MediumDeferred
Published 15-12-2025Last modified 13-10-2026
Vulnerability summary
CVE-2025-12035 is a medium (CVSS 6.5) Integer Overflow or Wraparound vulnerability in zephyrproject-rtos zephyr. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.4% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 15-12-2025PublishedVulnerability first disclosed.
- 13-10-2026Last modifiedVulnerability information updated.
Description
An integer overflow condition exists in Bluetooth Host stack, within the bt_br_acl_recv routine a critical path for processing inbound BR/EDR L2CAP traffic.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
9%
Versus all other CVEs
30-day change
0.00 pp
From 0.20% on 21-09-2026
21-09-202621-10-2026
EPSS score0.20%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Zephyrproject-rtos1 product
- zephyr< 4.3.0
1 vendor · 1 product