01 Record
CVE-2026-82962
Out-of-bounds write in Zephyr Ethernet L2 when adding the link-layer header to a forwarded packet
MediumPUBLISHEDCNA: zephyr
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
02 Description
Out-of-bounds write in Zephyr Ethernet L2 when adding the link-layer header to a forwarded packet
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- Not scored by EPSS
- EPSS percentile
- Not scored by EPSS
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-28.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-28 16:59Z18 HR AGO
- Last updated
- 2026-10-28 16:59Z18 HR AGO
- Reserved
- 2026-08-31
- Assigning CNA
- zephyr
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.2
- Document digest
- 98ad38008d9073f143031a3d1083995baf6e2d6780b4398ebfed4ab28b050203
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/b39f86ea61d0a0fdd7e9f145110649394e2c22ca
- github.comGHSA-56gp-jq94-c9hhhttps://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-56gp-jq94-c9hh