How severe is CVE-1999-1506?

CVE-1999-1506 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-1506 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1506?

CVE-1999-1506 primarily affects Sun Sunos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-1506?

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-1999-1506 published?

CVE-1999-1506 was published on 1990-01-29 and last updated on 2026-06-16.

CVE-1999-1506

CVE-1999-1506 is a high-severity vulnerability in Sun Sunos 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: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sun Sunos
Published: 1990-01-29
Last modified: 2026-06-16

Description

Vulnerability in SMI Sendmail 4.0 and earlier, on SunOS up to 4.0.3, allows remote attackers to access user bin.

Frequently asked questions

What is CVE-1999-1506?: Vulnerability in SMI Sendmail 4.0 and earlier, on SunOS up to 4.0.3, allows remote attackers to access user bin.
How severe is CVE-1999-1506?: CVE-1999-1506 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1506 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1506?: CVE-1999-1506 primarily affects Sun Sunos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-1506?: 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-1999-1506 published?: CVE-1999-1506 was published on 1990-01-29 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:sun:sunos:3.5:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.0:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.0.1:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.0.2:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.0.3:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.0.3c:*:*:*:*:*:*:*

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