CVE-1999-1506

Vulnerability in SMI Sendmail 4.0 and earlier, on SunOS up to 4.0.3, allows remote attackers to access user bin.

Published: 1990-01-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1506 is rated Moderate Risk (60.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.60%). EPSS rose +1.66% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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-1999-1506

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 0.94% 2.60% +1.66%
2 2026-01-24 0.68% 0.94% +0.27%
3 2025-04-04 — 0.68% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1506

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-1999-1506

Affected software / configurations for CVE-1999-1506

Vendor Product Version Raw CPE
sun sunos 3.5 cpe:2.3:o:sun:sunos:3.5:*:*:*:*:*:*:*
sun sunos 4.0 cpe:2.3:o:sun:sunos:4.0:*:*:*:*:*:*:*
sun sunos 4.0.1 cpe:2.3:o:sun:sunos:4.0.1:*:*:*:*:*:*:*
sun sunos 4.0.2 cpe:2.3:o:sun:sunos:4.0.2:*:*:*:*:*:*:*
sun sunos 4.0.3 cpe:2.3:o:sun:sunos:4.0.3:*:*:*:*:*:*:*
sun sunos 4.0.3c cpe:2.3:o:sun:sunos:4.0.3c:*:*:*:*:*:*:*

References for CVE-1999-1506

URL Tags
http://www.cert.org/advisories/CA-90.01.sun.sendmail.vulnerability Third Party Advisory US Government Resource
http://www.securityfocus.com/bid/6 Patch Vendor Advisory
cvelogic Threat Intelligence