CVE-2020-8955 is a critical buffer overflow vulnerability in WeeChat versions through 2.7, specifically within the irc_mode_channel_update function, affecting Debian, Fedora, and OpenSUSE distributions. This flaw allows unauthenticated remote attackers to trigger a denial of service (application crash) or potentially achieve arbitrary code execution by sending a specially crafted IRC 324 (channel mode) message. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, leading to high impacts on confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed on the CISA KEV catalog, indicating no active exploitation. Community discussion and media coverage are minimal, suggesting low public awareness despite its high severity.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0.3.8, <= 2.7CPE matchmatch criteria | cpe:2.3:a:weechat:weechat:*:*:*:*:*:*:*:* | ||
30CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | ||
31CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | ||
32CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | ||
15.0CPE matchmatch criteria | cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.