How severe is CVE-2017-7191?

CVE-2017-7191 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-2017-7191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7191?

CVE-2017-7191 affects Irssi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7191?

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-2017-7191 published?

CVE-2017-7191 was published on 2017-03-27 and last updated on 2026-06-17.

CVE-2017-7191

CVE-2017-7191 is a critical-severity vulnerability in Irssi 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-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Irssi
Published: 2017-03-27
Last modified: 2026-06-17

Description

The netjoin processing in Irssi 1.x before 1.0.2 allows attackers to cause a denial of service (use-after-free) and possibly execute arbitrary code via unspecified vectors.

Frequently asked questions

What is CVE-2017-7191?: The netjoin processing in Irssi 1.x before 1.0.2 allows attackers to cause a denial of service (use-after-free) and possibly execute arbitrary code via unspecified vectors.
How severe is CVE-2017-7191?: CVE-2017-7191 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-2017-7191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7191?: CVE-2017-7191 affects Irssi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7191?: 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-2017-7191 published?: CVE-2017-7191 was published on 2017-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:irssi:irssi:*:*:*:*:*:*:*:*

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