How severe is CVE-1999-0300?

CVE-1999-0300 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0300?

CVE-1999-0300 primarily affects Sun Solaris. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0300?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0300 published?

CVE-1999-0300 was published on 1997-10-01 and last updated on 2026-06-16.

CVE-1999-0300

CVE-1999-0300 is a high-severity vulnerability in Sun Solaris with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sun Solaris
Published: 1997-10-01
Last modified: 2026-06-16

Description

nis_cachemgr for Solaris NIS+ allows attackers to add malicious NIS+ servers.

Frequently asked questions

What is CVE-1999-0300?: nis_cachemgr for Solaris NIS+ allows attackers to add malicious NIS+ servers.
How severe is CVE-1999-0300?: CVE-1999-0300 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0300?: CVE-1999-0300 primarily affects Sun Solaris. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0300?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0300 published?: CVE-1999-0300 was published on 1997-10-01 and last updated on 2026-06-16.

References

http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/155

Affected products (7)

cpe:2.3:o:sun:solaris:2.4:*:x86:*:*:*:*:*
cpe:2.3:o:sun:solaris:2.5:*:x86:*:*:*:*:*
cpe:2.3:o:sun:solaris:2.5.1:*:x86:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.3:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.4:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.5.1:*:*:*:*:*:*:*

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