How severe is CVE-1999-0084?

CVE-1999-0084 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-1999-0084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0084?

CVE-1999-0084 affects Sun Nfs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0084?

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-1999-0084 published?

CVE-1999-0084 was published on 1990-05-01 and last updated on 2026-06-16.

CVE-1999-0084

CVE-1999-0084 is a high-severity vulnerability in Sun Nfs with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v2: 7.2
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Sun Nfs
Published: 1990-05-01
Last modified: 2026-06-16

Description

Certain NFS servers allow users to use mknod to gain privileges by creating a writable kmem device and setting the UID to 0.

Frequently asked questions

What is CVE-1999-0084?: Certain NFS servers allow users to use mknod to gain privileges by creating a writable kmem device and setting the UID to 0.
How severe is CVE-1999-0084?: CVE-1999-0084 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-1999-0084 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0084?: CVE-1999-0084 affects Sun Nfs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0084?: 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-1999-0084 published?: CVE-1999-0084 was published on 1990-05-01 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/78

Affected products (1)

cpe:2.3:a:sun:nfs:*:*:*:*:*:*:*:*

More vulnerabilities in Sun Nfs

CVE-1999-0169 — Critical (CVSS 10.0): NFS allows attackers to read and write any file on the system by specifying a false UID.
CVE-1999-0165 — Critical (CVSS 10.0): NFS cache poisoning.
CVE-1999-0166 — Medium (CVSS 5.0): NFS allows users to use a "cd .." command to access other directories besides the exported file system.

All CVEs affecting Sun Nfs →

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