CVE-2007-4473
Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary…
- 10.0HighCVSS base score
- 5.7%Exploitation in 30 daysEPSS · top 6.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By certcc
- 4 months later
· 4 months later
Published
- 17 years later
· 17 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 5.7% · top 6.9% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
7
- 28079 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.neutralbit.com/en/rd/opctest/ (opens in a new tab)x_refsource_MISCx_transferred
- 42650 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://www.neutralbit.com/downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf (opens in a new tab)x_refsource_MISCx_transferred
- 26876 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#205073 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- easylon-server-code-execution(39062) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2007-4456 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2007-4473)Record last updated .