How severe is CVE-2017-8366?

CVE-2017-8366 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-8366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8366?

CVE-2017-8366 affects Ettercap Project Ettercap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8366?

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

When was CVE-2017-8366 published?

CVE-2017-8366 was published on 2017-04-30 and last updated on 2026-06-17.

CVE-2017-8366

CVE-2017-8366 is a critical-severity vulnerability in Ettercap Project Ettercap with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ettercap Project Ettercap
Published: 2017-04-30
Last modified: 2026-06-17

Description

The strescape function in ec_strings.c in Ettercap 0.8.2 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 filter that is mishandled by etterfilter.

Frequently asked questions

What is CVE-2017-8366?: The strescape function in ec_strings.c in Ettercap 0.8.2 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 filter that is mishandled by etterfilter.
How severe is CVE-2017-8366?: CVE-2017-8366 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-8366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8366?: CVE-2017-8366 affects Ettercap Project Ettercap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-8366 published?: CVE-2017-8366 was published on 2017-04-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ettercap_project:ettercap:0.8.2:*:*:*:*:*:*:*

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