04 Affected products
PAIRS: —
01 RecordSTATE: PUBLISHED
02 Description
CNA: zephyrZephyr ext2 mount: unvalidated superblock block size causes out-of-bounds write from a crafted filesystem image
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- 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
- 6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Received. NVD last modified this record on 2026-08-25.
- 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.
SCHEMA: 5.2
- Published
- 2026-08-25 04:37Z1 HR AGO
- Last updated
- 2026-08-25 04:37Z1 HR AGO
- Reserved
- 2026-06-24
- Assigning CNA
- zephyr
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.8)
- CNA CVSS vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 0e85b48e7bcd7821d620d55fac65e369ea6c06dc1323a4ba8603579cab3e95eb
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
zephyrprojectzephyr3.5.0 to < 4.4.2—