Is CVE-2017-9146 in the CISA KEV catalog?

No. CVE-2017-9146 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-9146?

CVE-2017-9146 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2017-9146?

CVE-2017-9146 has an EPSS score of 2.39% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-9146?

Upgrade libytnef on debian 11 to 1.9.3-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-9146

HIGHEPSS 82th pctl

8.8

CVSS v3

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.

CWE-119Buffer Overflow

How to fix

Remediation Available

libytnefDebian

Fixed in:1.9.3-1CVE-2017-9146

libytnefUbuntu

Fixed in:1.5-6ubuntu0.2USN-3667-1

libytnef0Ubuntu

Fixed in:1.5-6ubuntu0.2USN-3667-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.39%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory1

bugs.debian.org

Other references2

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.