What is CVE-2026-40447?

CVE-2026-40447 is a medium-severity vulnerability in Samsung Escargot, classified under Integer Overflow or Wraparound. CVSS score: 5.1/10. Published 2026-04-13.

How severe is CVE-2026-40447?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Integer overflow in Samsung Escargot

CVE-2026-40447

Integer overflow or wraparound vulnerability in Samsung Open Source Escargot allows undefined behavior.This issue affects Escargot: 97e8115ab1110bc502b4b5e4a0c689a71520d335.

Vulnerability class: Integer Overflow

Published 2026-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (19.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Samsung Escargot — versions 2026-03-28
Samsung Open Source Escargot — versions 97e8115ab1110bc502b4b5e4a0c689a71520d335

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/Samsung/escargot/pull/1554 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-40447?: CVE-2026-40447 is a medium-severity vulnerability in Samsung Escargot, classified under Integer Overflow or Wraparound. CVSS score: 5.1/10. Published 2026-04-13.
How severe is CVE-2026-40447?: Medium severity. CVSS v3 base score is 5.1 out of 10.