What is CVE-2017-8368?

CVE-2017-8368 is a high-severity vulnerability in Sublimetext Sublime Text 3, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-05.

How severe is CVE-2017-8368?

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

Buffer overflow in Sublimetext Sublime Text 3

CVE-2017-8368

Sublime Text 3 Build 3126 allows user-assisted attackers to cause a denial of service or possibly have unspecified other impact via a crafted .mkv file. One threat model is a victim who obtains an untrusted crafted file from a remote location and issues several user-defined commands, as demonstrated by Ctrl-A, Delete, and Ctrl-Z.

Vulnerability class: Buffer Overflow

Published 2017-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Sublimetext Sublime Text 3

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/SublimeTextIssues/Core/issues/1700
github.com/wlinzi/security_advisories/tree/master/CVE-2017-8368 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-8368?: CVE-2017-8368 is a high-severity vulnerability in Sublimetext Sublime Text 3, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-05.
How severe is CVE-2017-8368?: High severity. CVSS v3 base score is 7.8 out of 10.