How severe is CVE-2017-9146?

CVE-2017-9146 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-9146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9146?

CVE-2017-9146 affects Ytnef Project Ytnef. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9146?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-9146 published?

CVE-2017-9146 was published on 2017-05-22 and last updated on 2026-06-17.

CVE-2017-9146

CVE-2017-9146 is a high-severity vulnerability in Ytnef Project Ytnef with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ytnef Project Ytnef
Published: 2017-05-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-9146?: 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.
How severe is CVE-2017-9146?: CVE-2017-9146 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-9146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9146?: CVE-2017-9146 affects Ytnef Project Ytnef. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9146 published?: CVE-2017-9146 was published on 2017-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ytnef_project:ytnef:*:*:*:*:*:*:*:*

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