irssi: NULL pointer dereference when channel topic is set without specifying sender
Published Jan 6, 2018
9.8
CRITICALCVSS 3.0
EPSS 2.16%
Description
When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
Affected products
No data.
Configuration 2
- 9.0
No data.
Red Hat Enterprise Linux 6
irssi
Will not fix
Red Hat Enterprise Linux 7
irssi
Will not fix
Red Hat Enterprise Linux 8
irssi
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | irssi | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | irssi | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | irssi | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.16% (0.02157) | 81.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.20% (0.02199) | 80.12th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.61% (0.00612) | 67.32th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.78% (0.01779) | 71.45th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.21% (0.00205) | 58.91th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00205) | 58.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00205) | 56.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v1 |
| Jan 6, 2022 | 0.62% (0.00624) | 17.24th | v1 |
| Sep 1, 2021 | 0.62% (0.00624) | 45.04th | v1 |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (6)
- https://access.redhat.com/security/cve/CVE-2018-5206 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1532569 Issue Tracking
- https://irssi.org/security/irssi_sa_2018_01.txt x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-5206
- https://www.cve.org/CVERecord?id=CVE-2018-5206
- https://www.debian.org/security/2018/dsa-4162 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-5206 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1532569 | Issue Tracking | |
| https://irssi.org/security/irssi_sa_2018_01.txt | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-5206 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-5206 | ||
| https://www.debian.org/security/2018/dsa-4162 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.