CVE-2021-29376 json
ircII before 20210314 allows remote attackers to cause a denial of service (segmentation fault and client crash, disconnecting the victim f…
published 2021-03-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-16011
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
ircII before 20210314 allows remote attackers to cause a denial of service (segmentation fault and client crash, disconnecting the victim from an IRC server) via a crafted CTCP UTC message.
Patch / fix
- eterna ircii 20210314
- ircii Debian 14, Debian 13, Debian 12 20210314-1
- scrollz Debian 12 2.2.3-2
debian advisories DEBIAN-CVE-2021-29376
- ircii Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 20210314-r0
alpine advisories ALPINE-CVE-2021-29376
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
2.26% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
References
-
eterna.com.au
/ircii/
product, vendor-advisory
-
openwall.com
/lists/oss-security/2021/03/24/2
mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2021/03/30/4
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2021/08/msg00022.html
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2021/08/msg00023.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2021-29376
- NVD CVE-2021-29376
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.