How severe is CVE-1999-0056?

CVE-1999-0056 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-1999-0056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0056?

CVE-1999-0056 primarily affects Sun Sunos. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0056?

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-1999-0056 published?

CVE-1999-0056 was published on 1998-09-09 and last updated on 2026-06-16.

CVE-1999-0056

CVE-1999-0056 is a high-severity vulnerability in Sun Sunos with a CVSS 2.0 base score of 7.2. 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 7.2)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sun Sunos
Published: 1998-09-09
Last modified: 2026-06-16

Description

Buffer overflow in Sun's ping program can give root access to local users.

Frequently asked questions

What is CVE-1999-0056?: Buffer overflow in Sun's ping program can give root access to local users.
How severe is CVE-1999-0056?: CVE-1999-0056 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-1999-0056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0056?: CVE-1999-0056 primarily affects Sun Sunos. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0056?: 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-1999-0056 published?: CVE-1999-0056 was published on 1998-09-09 and last updated on 2026-06-16.

References

http://sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=coll&doc=secbull/174

Affected products (5)

cpe:2.3:o:sun:sunos:*:*:*:*:*:*:*:*
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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