What is CVE-2026-107446?

CVE-2026-107446 is a medium-severity vulnerability in Containerd Overlaybd, classified under Integer Overflow or Wraparound. CVSS score: 6.8/10. Published 2026-10-08.

How severe is CVE-2026-107446?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Integer overflow in Containerd Overlaybd

CVE-2026-107446

containerd overlaybd through 1.0.18 has a do_load_index (LSMT index loading) integer overflow (and resultant out-of-bounds heap access) for index_bytes, if an untrusted overlaybd blob from a registry is used in a scenario with multiple overlaybd-backed containers.

Vulnerability class: Integer Overflow

Published 2026-10-08 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Containerd Overlaybd

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

Frequently asked questions

What is CVE-2026-107446?: CVE-2026-107446 is a medium-severity vulnerability in Containerd Overlaybd, classified under Integer Overflow or Wraparound. CVSS score: 6.8/10. Published 2026-10-08.
How severe is CVE-2026-107446?: Medium severity. CVSS v3 base score is 6.8 out of 10.