What is CVE-2026-47311?

CVE-2026-47311 is a high-severity vulnerability in Samsung Escargot, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-05-19.

How severe is CVE-2026-47311?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Samsung Escargot

CVE-2026-47311

Heap-based buffer overflow vulnerability in Samsung Open Source Escargot allows Overflow Buffers. This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.

Vulnerability class: Buffer Overflow

Published 2026-05-19 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Samsung Escargot — versions 2026-05-14
Samsung Open Source Escargot — versions 590345cc6258317c5da850d846ce6baaf2afc2d3

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

github.com/Samsung/escargot/pull/1565 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-47311?: CVE-2026-47311 is a high-severity vulnerability in Samsung Escargot, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-05-19.
How severe is CVE-2026-47311?: High severity. CVSS v3 base score is 7.8 out of 10.