What is CVE-2017-6299?

CVE-2017-6299 is a medium-severity vulnerability in Ytnef Project, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2017-02-24.

How severe is CVE-2017-6299?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Ytnef Project

CVE-2017-6299

An issue was discovered in ytnef before 1.9.1. This is related to a patch described as "2 of 9. Infinite Loop / DoS in the TNEFFillMapi function in lib/ytnef.c."

Published 2017-02-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Ytnef Project
Debian Linux — versions 8.0, 9.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

www.securityfocus.com/bid/96423 (VDB Entry, Third Party Advisory, vdb-entry)
www.openwall.com/lists/oss-security/2017/02/15/4 (Patch, Mailing List, Third Party Advisory)
github.com/Yeraze/ytnef/pull/27 (Patch, Third Party Advisory, Issue Tracking)
www.debian.org/security/2017/dsa-3846 (vendor-advisory, Third Party Advisory)
www.x41-dsec.de/lab/advisories/x41-2017-002-ytnef/ (Patch, Third Party Advisory)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)

Frequently asked questions

What is CVE-2017-6299?: CVE-2017-6299 is a medium-severity vulnerability in Ytnef Project, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2017-02-24.
How severe is CVE-2017-6299?: Medium severity. CVSS v3 base score is 5.5 out of 10.