How severe is CVE-1999-0303?

CVE-1999-0303 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-1999-0303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0303?

CVE-1999-0303 primarily affects Digital Osf 1. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0303?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-1999-0303 published?

CVE-1999-0303 was published on 1998-05-21 and last updated on 2026-06-16.

CVE-1999-0303

CVE-1999-0303 is a medium-severity vulnerability in Digital Osf 1 with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Digital Osf 1
Published: 1998-05-21
Last modified: 2026-06-16

Description

Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames.

Frequently asked questions

What is CVE-1999-0303?: Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames.
How severe is CVE-1999-0303?: CVE-1999-0303 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-1999-0303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0303?: CVE-1999-0303 primarily affects Digital Osf 1. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0303 published?: CVE-1999-0303 was published on 1998-05-21 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0303

Affected products (20)

cpe:2.3:o:digital:osf_1:1.1:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.3:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:1.3.1:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*
cpe:2.3:o:sun:solaris:*:*:x86:*:*:*:*:*
cpe:2.3:o:sun:solaris:1.1.3:u1:*:*:*:*:*:*
cpe:2.3:o:sun:solaris:1.1.4:*:jl:*:*:*:*:*
cpe:2.3:o:sun:solaris:2.4:*:x86:*:*:*:*:*
cpe:2.3:o:sun:solaris:2.5:*:x86:*:*:*:*:*
cpe:2.3:o:sun:sunos:-:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.1.3:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:4.1.4:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.0:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.1:*:*:*:*:*:*:*
cpe:2.3:o:sun:sunos:5.2:*:*:*:*:*:*:*
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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