Is CVE-2017-15227 in the CISA KEV catalog?

No. CVE-2017-15227 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-15227?

CVE-2017-15227 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2017-15227?

CVE-2017-15227 has an EPSS score of 2.08% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-15227?

Upgrade irssi on debian 11 to 1.0.5-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2017-15227

HIGHEPSS 79th pctl

7.5

CVSS v3

NVD

Description

Irssi before 1.0.5, while waiting for the channel synchronisation, may incorrectly fail to remove destroyed channels from the query list, resulting in use-after-free conditions when updating the state later on.

CWE-416Use After Free

How to fix

Remediation Available

irssiDebian

Fixed in:1.0.5-1CVE-2017-15227

irssiUbuntu

Fixed in:0.8.15-5ubuntu3.3USN-3465-1

Fixed in:0.8.19-1ubuntu1.5USN-3465-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.08%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Patch2

Other references2

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.