How severe is CVE-2017-6308?

CVE-2017-6308 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-6308 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6308?

CVE-2017-6308 primarily affects Tnef Project Tnef. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6308?

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-2017-6308 published?

CVE-2017-6308 was published on 2017-02-24 and last updated on 2026-06-17.

CVE-2017-6308

CVE-2017-6308 is a high-severity vulnerability in Tnef Project Tnef with a CVSS 3.x base score of 7.8. 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Tnef Project Tnef
Published: 2017-02-24
Last modified: 2026-06-17

Description

An issue was discovered in tnef before 1.4.13. Several Integer Overflows, which can lead to Heap Overflows, have been identified in the functions that wrap memory allocation.

Frequently asked questions

What is CVE-2017-6308?: An issue was discovered in tnef before 1.4.13. Several Integer Overflows, which can lead to Heap Overflows, have been identified in the functions that wrap memory allocation.
How severe is CVE-2017-6308?: CVE-2017-6308 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-6308 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6308?: CVE-2017-6308 primarily affects Tnef Project Tnef. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6308?: 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-2017-6308 published?: CVE-2017-6308 was published on 2017-02-24 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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