Is CVE-2006-4303 being actively exploited?

CVE-2006-4303 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-4303?

CVE-2006-4303 has a CVSS 2.0 base score of 2.6 (LOW).

CVE-2006-4303

LOW · CVSS 2.6EPSS 1.3%EU EUVD

Race condition in (1) libnsl and (2) TLI/XTI API routines in Sun Solaris 10 allows remote attackers to cause a denial of service ("tight loop" and CPU consumption for listener applications) via unknown vectors related to TCP fusion (do_tcp_fusion).

Key facts

CVSS score: 2.6 (v2.0)
Severity: LOW
CVSS vector: AV:N/AC:H/Au:N/C:N/I:N/A:P
EPSS score: 1.3% (71th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-4291)
Published: August 23, 2006
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-4291 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

sun / solaris

References

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

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