Is CVE-2017-15722 in the CISA KEV catalog?

No. CVE-2017-15722 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-15722?

CVE-2017-15722 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2017-15722?

CVE-2017-15722 has an EPSS score of 1.97% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-15722?

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

CVE & CISA-KEV Catalog

CVE-2017-15722

MEDIUMEPSS 78th pctl

5.9

CVSS v3

NVD

Description

In certain cases, Irssi before 1.0.5 may fail to verify that a Safe channel ID is long enough, causing reads beyond the end of the string.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

irssiDebian

Fixed in:1.0.5-1CVE-2017-15722

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.97%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch2

Third-Party Advisory2

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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.