CVE-1999-1554

/usr/sbin/Mail on SGI IRIX 3.3 and 3.3.1 does not properly set the group ID to the group ID of the user who started Mail, which allows local users to read the mail of other users.

Published: 1990-10-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1554 is rated Low Risk (19.3/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.42%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-1999-1554

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.25% 0.42% -0.83%
2 2026-04-19 1.65% 1.25% -0.40%
3 2026-04-16 — 1.65% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1554

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-1999-1554

Affected software / configurations for CVE-1999-1554

Vendor Product Version Raw CPE
sgi irix 3.3 cpe:2.3:o:sgi:irix:3.3:*:*:*:*:*:*:*
sgi irix 3.3.1 cpe:2.3:o:sgi:irix:3.3.1:*:*:*:*:*:*:*

References for CVE-1999-1554

cvelogic Threat Intelligence