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Vulnerability details: VCID-wqt2-m3gv-6fgk
Vulnerability ID VCID-wqt2-m3gv-6fgk
Aliases CVE-2018-9127
Summary Botan 2.2.0 - 2.4.0 (fixed in 2.5.0) improperly handled wildcard certificates and could accept certain certificates as valid for hostnames when, under RFC 6125 rules, they should not match. This only affects certificates issued to the same domain as the host, so to impersonate a host one must already have a wildcard certificate matching other hosts in the same domain. For example, b*.example.com would match some hostnames that do not begin with a 'b' character.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
epss 0.00179 https://api.first.org/data/v1/epss?cve=CVE-2018-9127
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-9127
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9127
894648 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894648
No exploits are available.
There are no known vectors.
Exploit Prediction Scoring System (EPSS)
Percentile 0.3933
EPSS Score 0.00179
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:24.952302+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0