What’s Vulnerable › Vulnerabilities

CVE-2018-5206

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-01-06 · updated 2026-06-17
• Weakness: CWE-476

Description

When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.

Affected products

• Debian Linux: 9.0
• Irssi: before 1.0.6 — fixed in 1.0.6

How to fix

Upgrade to a fixed version: Irssi 1.0.6. Check the vendor advisory for mitigations.

References

• https://irssi.org/security/irssi_sa_2018_01.txt
• https://www.debian.org/security/2018/dsa-4162
• https://irssi.org/security/irssi_sa_2018_01.txt
• https://www.debian.org/security/2018/dsa-4162

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