Irssi before 0.8.15, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IRC servers via an arbitrary certificate
Published Apr 16, 2010
6.8
MEDIUMCVSS 2.0
EPSS 1.56%
Description
Irssi before 0.8.15, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IRC servers via an arbitrary certificate.
Affected products
No data.
- ≤ 0.8.15
- 0.8.0
- 0.8.1
- 0.8.2
- 0.8.3
- 0.8.4
- 0.8.5
- 0.8.6
- 0.8.7
- 0.8.8
- 0.8.9
- 0.8.10
- 0.8.10
- 0.8.10
- 0.8.10
- 0.8.10
- 0.8.11
- 0.8.11
- 0.8.11
- 0.8.12
- 0.8.12
- 0.8.13
- 0.8.13
- 0.8.14
No data.
No Red Hat product state for this CVE.
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.56% (0.01562) | 74.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.56% (0.01562) | 71.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.86% (0.00861) | 73.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.48% (0.00481) | 76.70th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.48% (0.00481) | 75.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.48% (0.00477) | 71.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (19)
- http://github.com/ensc/irssi-proxy/commit/85bbc05b21678e80423815d2ef1dfe26208491ab x_refsource_CONFIRM
- http://irssi.org/news x_refsource_CONFIRM
- http://irssi.org/news/ChangeLog x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041054.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=oss-security&m=127098845125270&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=oss-security&m=127110132019166&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=oss-security&m=127116251220784&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=oss-security&m=127119240204394&w=2 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/39365 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/39620 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/39797 third-party-advisoryx_refsource_SECUNIA
- http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.497301 vendor-advisoryx_refsource_SLACKWARE
- http://www.ubuntu.com/usn/USN-929-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2010/0856 vdb-entryx_refsource_VUPENPatchVendor Advisory
- http://www.vupen.com/english/advisories/2010/0987 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/1107 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2010/1110 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/57790 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.