What is CVE-2026-118435?

CVE-2026-118435 is a medium-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 5.4/10. Published 2026-10-28.

How severe is CVE-2026-118435?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CVE-2026-118435

CVE-2026-118435

Out-of-bounds write vulnerability in Samsung Open Source escargot allows Buffer Manipulation.

Vulnerability class: Buffer Overflow

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (10.8th percentile), scored 2026-10-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/Samsung/escargot/pull/1750

Frequently asked questions

What is CVE-2026-118435?: CVE-2026-118435 is a medium-severity vulnerability, classified under Out-of-bounds Write. CVSS score: 5.4/10. Published 2026-10-28.
How severe is CVE-2026-118435?: Medium severity. CVSS v3 base score is 5.4 out of 10.