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CVE-2004-0657

Status: ModifiedMedium (5)—

Integer overflow in the NTP daemon (NTPd) before 4.0 causes the NTP server to return the wrong date/time offset when a client requests a date/time that is more than 34 years away from the server's time.

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 (2)

HP — Tru64 UnixNTP — NTP

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2004-0657",
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
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  "published": "2004-08-06T04:00:00.000",
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      "tags": [
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      "tags": [
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    }
  ],
  "lastModified": "2026-06-16T22:06:06.383",
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