THREATPORT/VULNERABILITY/CVE-2007-4473
HIGH SEVERITY

CVE-2007-4473

Opc Server vulnerability

CVSS
10.0
EPSS
5.7%
EPSS pct
92th
Exploited
No known
Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code or cause a denial of service via unspecified network traffic to the OLE for Process Control (OPC) interface, probably related to free operations on arbitrary memory addresses through certain Remove functions, and read and write operations on arbitrary memory addresses through certain Set, Read, and Write functions.
Affected vendor
Gesytec Easylon
Affected product
Opc Server
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2007-12-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 5.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2007-4473

  • Confirm whether Gesytec Easylon Opc Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2007-4473.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-4473

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-4473 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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