01 Record
CVE-2026-19577
Out-of-bounds read in IPv6 route forwarding when the nexthop neighbor has no link-layer address
HighPUBLISHEDCNA: zephyr
CNA base score7.1 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
02 Description
Out-of-bounds read in IPv6 route forwarding when the nexthop neighbor has no link-layer address
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
- 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- NVD analysis status
- Received. NVD last modified this record on 2026-10-11.
- 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
- 2026-10-11 17:14Z4 HR AGO
- Last updated
- 2026-10-11 17:14Z4 HR AGO
- Reserved
- 2026-08-11
- Assigning CNA
- zephyr
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.1)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- 4e8b93db2cec3e12ab9ca9595974b9c0d77613dc73ab5d63efbf4e1e5b07fc38
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/b0b0e8973d1967114adbb9ed1611d448b5a46519
- github.comGHSA-vv76-4m89-95q5https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-vv76-4m89-95q5