CVE-2015-7599

Integer overflow in the _authenticate function in svc_auth.c in Wind River VxWorks 5.5 through 6.9.4.1, when the Remote Procedure Call (RPC) protocol is enabled, allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a username and password.

Published: 2017-02-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-7599 is rated Moderate Risk (62.4/100): CVSS High severity, with high exploitation likelihood (EPSS 5.91%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2015-7599

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 8.22% 5.91% -2.31%
2 2026-03-25 6.59% 8.22% +1.64%
3 2025-10-11 — 6.59% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-7599

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2015-7599

Affected software / configurations for CVE-2015-7599

Vendor Product Version Raw CPE
windriver vxworks <= 6.9.4.1 cpe:2.3:o:windriver:vxworks:*:*:*:*:*:*:*:*
windriver vxworks 5.5 cpe:2.3:o:windriver:vxworks:5.5:*:*:*:*:*:*:*
windriver vxworks 6.4 cpe:2.3:o:windriver:vxworks:6.4:*:*:*:*:*:*:*
windriver vxworks 6.7 cpe:2.3:o:windriver:vxworks:6.7:*:*:*:*:*:*:*
windriver vxworks 6.8 cpe:2.3:o:windriver:vxworks:6.8:*:*:*:*:*:*:*
windriver vxworks 6.9 cpe:2.3:o:windriver:vxworks:6.9:*:*:*:*:*:*:*

References for CVE-2015-7599

cvelogic Threat Intelligence