What’s Vulnerable › Vulnerabilities

CVE-2019-15717

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-29 · updated 2026-06-17
• Weakness: CWE-416

Description

Irssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double CAP.

Affected products

• Canonical Ubuntu Linux: 19.04
• Irssi: from 1.2.0 before 1.2.2 — fixed in 1.2.2

How to fix

Upgrade to a fixed version: Irssi 1.2.2. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2019/08/29/3
• http://www.openwall.com/lists/oss-security/2019/08/29/5
• https://irssi.org/security/irssi_sa_2019_08.txt
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDDRTNKDDO52CO5USJ73BE6XVG7BD4KP/
• https://usn.ubuntu.com/4119-1/
• http://www.openwall.com/lists/oss-security/2019/08/29/3
• http://www.openwall.com/lists/oss-security/2019/08/29/5
• https://irssi.org/security/irssi_sa_2019_08.txt
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDDRTNKDDO52CO5USJ73BE6XVG7BD4KP/
• https://usn.ubuntu.com/4119-1/

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