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CVE-2007-4473

26
FAUCET Score

CVE-2007-4473 describes a critical vulnerability in Gesytec Easylon OPC Server versions prior to 2.3.44. This flaw, likely stemming from improper validation of server handles, allows remote attackers to execute arbitrary code or cause a denial of service through specially crafted network traffic to the OLE for Process Control (OPC) interface. With a CVSS score of 10.0, this vulnerability is highly severe, requiring no authentication and having a low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Despite its age and high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.30.32CPE matchmatch criteria
cpe:2.3:a:gesytec_easylon:opc_server:2.30.32:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.69%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0569 is in the 87th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 42650
secunia.com / advisories/28079
exchange.xforce.ibmcloud.com / vulnerabilities/39062
kb.cert.org / vuls/id/205073
PatchUS Government Resource
neutralbit.com / downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf
neutralbit.com / en/rd/opctest
securityfocus.com / bid/26876