← Vulnerability feed

Vulnerability record · CVE-2017-9146 · published 22 May 2017

CVE-2017-9146: Ytnef project ytnef memory buffer overflow vulnerability

YYtnef Project · Ytnef

The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.

8.8 CVSS 3.0 High EPSS 2.4% · top 16.7% CWE-119 · Memory buffer overflow
8.8CVSS 3.0 base score, v2 6.8
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862707 Third Party Advisory
https://github.com/Yeraze/ytnef/issues/47 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQ
https://usn.ubuntu.com/3667-1/
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862707 Third Party Advisory
https://github.com/Yeraze/ytnef/issues/47 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQ
https://usn.ubuntu.com/3667-1/

Track CVE-2017-9146 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2009-3887Ytnef project ytnef path traversal vulnerabilityytnef has directory traversalEPSS 2.5%9.8CVE-2017-9058Ytnef project ytnef out-of-bounds read vulnerabilityIn libytnef in ytnef through 1.9.2, there is a heap-based buffer over-read due to incorrect boundary checking in the SIZECHECK macro in lib/ytnef.c.EPSS 1.5%7.8CVE-2009-3721Gnome evolution path traversal vulnerabilityMultiple directory traversal and buffer overflow vulnerabilities were discovered in yTNEF, and in Evolution's TNEF parser that is derived from yTNEF.…EPSS 1.6%7.8CVE-2021-3403Ytnef project ytnef use after free vulnerabilityIn ytnef 1.9.3, the TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) …EPSS 1.8%7.8CVE-2021-3404Ytnef project ytnef memory buffer overflow vulnerabilityIn ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a h…EPSS 1.9%7.8CVE-2017-6298Ytnef project ytnef null pointer dereference vulnerabilityAn issue was discovered in ytnef before 1.9.1. This is related to a patch described as "1 of 9. Null Pointer Deref / calloc return value not checked."EPSS 1.5%7.8CVE-2017-6300Ytnef project ytnef memory buffer overflow vulnerabilityAn issue was discovered in ytnef before 1.9.1. This is related to a patch described as "3 of 9. Buffer Overflow in version field in lib/tnef-types.h."EPSS 1.3%7.8CVE-2017-6301Ytnef project ytnef out-of-bounds read vulnerabilityAn issue was discovered in ytnef before 1.9.1. This is related to a patch described as "4 of 9. Out of Bounds Reads."EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2017-9146), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.