Indicator investigation
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Indicator
Type cve · source NVD CVE
MEDIUM SEVERITY (CVSS 6.5)
Vulnerability investigation
The available snapshot does not list this vulnerability in CISA KEV; that is not proof exploitation has not occurred. NVD rates the technical severity medium at CVSS 6.5. These are public vulnerability signals, not proof that a specific environment runs an affected version.
Exploitation status
No KEV listing in available snapshot
Absence from KEV does not establish absence of exploitation.
30-day exploitation likelihood
Unavailable
FIRST EPSS did not return a score.
Technical severity
6.5 · medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected surface
Product applicability incomplete
No structured product mapping is available.
Weakness class
CWE-606
CWE describes the weakness category, not whether a deployed product is reachable or exploitable.
Corpus evidence
2 connectors · 40 citations
No related report text is available in the local corpus.
Findings stay bounded to named sources and observable infrastructure.
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.
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Investigation status
Checking for newly completed evidence
NIST NVD
NVD evidence is available in this response
CISA KEV
Known-exploitation catalog check is pending
FIRST EPSS
Forensia does not request or publish EPSS while source rights are under review
Reports
Report links are still being resolved
Relationships
Product and vulnerability relationships are still being prepared
Local EPSS row, KEV flag, and catalog notes from stored metadata only.
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