Is CVE-2007-3537 being actively exploited?

CVE-2007-3537 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-3537?

CVE-2007-3537 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2007-3537

HIGH · CVSS 7.8EPSS 1.5%EU EUVD

IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.

Key facts

CVSS score: 7.8 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:N/A:N
EPSS score: 1.5% (74th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-3521)
Published: July 3, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-3521 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

ibm / os 400
ibm / os 400
ibm / os 400
ibm / os 400
ibm / os 400
ibm / os 400
ibm / os 400
ibm / os 400

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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