CVE-2017-5194
Use-after-free vulnerability in Irssi before 0.8.21 allows remote attackers to cause a denial of service (crash) via an invalid nick message.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.95%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Use-after-free vulnerability in Irssi before 0.8.21 allows remote attackers to cause a denial of service (crash) via an invalid nick message.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.95% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- irssi/irssi · debian/debian linux
- Source
- cve@mitre.org
EPSS 5.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2017/01/06/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95310Third Party Advisory, VDB Entry
- https://irssi.org/security/irssi_sa_2017_01.txtPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00022.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201701-45Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/06/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95310Third Party Advisory, VDB Entry
- https://irssi.org/security/irssi_sa_2017_01.txtPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00022.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/201701-45Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.