CVE-2017-15721

HIGH 7.5CVE-2017-15721 · Published 22/10/2017 · updated 17/06/2026

In short

CVE-2017-15721 is a HIGH (CVSS 7.5) vulnerability affecting irssi (irssi).
Chance of exploitation in the next 30 days (EPSS): 2.4%, higher than 83.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
irssi irssi	`≤ 1.0.4`	No fix yet

Description

In Irssi before 1.0.5, certain incorrectly formatted DCC CTCP messages could cause a NULL pointer dereference. This is a separate, but similar, issue relative to CVE-2017-9468.

References

openwall.com/lists/oss-security/2017/10/22/4 · Mailing List
irssi.org/security/irssi_sa_2017_10.txt · Mitigation
lists.debian.org/debian-lts-announce/2017/12/msg00022.html · Mailing List
debian.org/security/2017/dsa-4016 · Third Party Advisory

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Package

Affected versions

Patched versions

irssi

≤ 1.0.4

No fix yet

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