How severe is CVE-2017-1000191?

CVE-2017-1000191 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-1000191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000191?

CVE-2017-1000191 primarily affects Jool. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-1000191?

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-2017-1000191 published?

CVE-2017-1000191 was published on 2017-11-17 and last updated on 2026-06-17.

CVE-2017-1000191

CVE-2017-1000191 is a high-severity vulnerability in Jool with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Jool
Published: 2017-11-17
Last modified: 2026-06-17

Description

Jool 3.5.0-3.5.1 is vulnerable to a kernel crashing packet resulting in a DOS.

Frequently asked questions

What is CVE-2017-1000191?: Jool 3.5.0-3.5.1 is vulnerable to a kernel crashing packet resulting in a DOS.
How severe is CVE-2017-1000191?: CVE-2017-1000191 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-1000191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000191?: CVE-2017-1000191 primarily affects Jool. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-1000191?: 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-2017-1000191 published?: CVE-2017-1000191 was published on 2017-11-17 and last updated on 2026-06-17.

References

https://github.com/NICMx/Jool/issues/232

Affected products (2)

cpe:2.3:a:jool:jool:3.5.0:*:*:*:*:*:*:*
cpe:2.3:a:jool:jool:3.5.1:*:*:*:*:*:*:*

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