How severe is CVE-1999-1059?

CVE-1999-1059 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-1999-1059 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1059?

CVE-1999-1059 affects Att Svr4. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1059?

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

When was CVE-1999-1059 published?

CVE-1999-1059 was published on 1992-02-25 and last updated on 2026-06-16.

CVE-1999-1059

CVE-1999-1059 is a critical-severity vulnerability in Att Svr4 with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Att Svr4
Published: 1992-02-25
Last modified: 2026-06-16

Description

Vulnerability in rexec daemon (rexecd) in AT&T TCP/IP 4.0 for various SVR4 systems allows remote attackers to execute arbitrary commands.

Frequently asked questions

What is CVE-1999-1059?: Vulnerability in rexec daemon (rexecd) in AT&T TCP/IP 4.0 for various SVR4 systems allows remote attackers to execute arbitrary commands.
How severe is CVE-1999-1059?: CVE-1999-1059 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-1999-1059 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1059?: CVE-1999-1059 affects Att Svr4. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1059?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-1999-1059 published?: CVE-1999-1059 was published on 1992-02-25 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:att:svr4:4.0:*:*:*:*:*:*:*

More vulnerabilities in Att Svr4

CVE-1999-1034 — High (CVSS 7.2): Vulnerability in login in AT&T System V Release 4 allows local users to gain privileges.

All CVEs affecting Att Svr4 →