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CVE-2012-5662

Status: ModifiedMedium (5.8)—

x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Paul Mattes — X3270

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2012-5662",
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
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        "obtainAllPrivilege": false,
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  "published": "2014-05-27T14:55:02.993",
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    },
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  "lastModified": "2026-06-16T23:47:12.533",
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