CVE-2020-8955
CRITICALCVSS 9.8/10EPSS 3.68%
Last modified
CVE-2020-8955 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).. EPSS estimates a 3.68% chance of exploitation in the next 30 days.
Description
irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Weechat | Weechat | >= 0.3.8, <= 2.7 |
| Fedoraproject | Fedora | 30 |
| Fedoraproject | Fedora | 31 |
| Fedoraproject | Fedora | 32 |
| Opensuse | Backports Sle | 15.0 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.htmlMailing List, Third Party Advisory
- https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74daPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00031.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/09/msg00018.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-51Third Party Advisory
- https://weechat.org/doc/security/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.htmlMailing List, Third Party Advisory
- https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74daPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00031.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/09/msg00018.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-51Third Party Advisory
- https://weechat.org/doc/security/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8955?
irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).
How severe is CVE-2020-8955?
CVE-2020-8955 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.68% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8955?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-8955?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST