CVE-2018-5208 Memory corruption in n/a

What is CVE-2018-5208?

CVE-2018-5208 is a critical memory corruption vulnerability in Debian Debian Linux, published on 6 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings.

Weakness: CWE-119

Which versions are affected by CVE-2018-5208?

It affects 2 products.

Products include Debian Debian Linux, Irssi Irssi.

How do I fix CVE-2018-5208?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-5208 being exploited?

There is no known exploitation of CVE-2018-5208 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2018-5208, DEBIAN-CVE-2018-5208, GHSA-7xfv-xhfj-92hw, UBUNTU-CVE-2018-5208.