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Vulnerability record · CVE-2017-9472 · published 7 June 2017

CVE-2017-9472: Ytnef project ytnef out-of-bounds read vulnerability

YYtnef Project · Ytnef

In ytnef 1.9.2, the SwapDWord function in lib/ytnef.c allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file.

5.5 CVSS 3.0 Medium EPSS 0.94% · top 40.4% CWE-125 · Out-of-bounds read
5.5CVSS 3.0 base score, v2 4.3
0.94%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In ytnef 1.9.2, the SwapDWord function in lib/ytnef.c allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file.

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

Affected products

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

References

LinkTags
https://blogs.gentoo.org/ago/2017/05/24/ytnef-heap-based-buffer-overflow-in-swapdword-ytnef-c/ ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQ
https://blogs.gentoo.org/ago/2017/05/24/ytnef-heap-based-buffer-overflow-in-swapdword-ytnef-c/ ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LFJWMUEUC4ILH2HEOCYVVLQ

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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%8.8CVE-2017-9146Ytnef project ytnef memory buffer overflow vulnerabilityThe 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,…EPSS 2.4%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-2017-6304Ytnef project ytnef out-of-bounds read vulnerabilityAn issue was discovered in ytnef before 1.9.1. This is related to a patch described as "7 of 9. Out of Bounds read."EPSS 1.2%7.8CVE-2017-6302Ytnef project ytnef integer overflow vulnerabilityAn issue was discovered in ytnef before 1.9.1. This is related to a patch described as "5 of 9. Integer Overflow."EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2017-9472), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.