VULNERABILITY INTELLIGENCE
CVE-2015-3963
CVSS score5.8 MEDIUM
EPSS probability3.74%
CISA KEVNot currently listed
Published2015-08-04
Last modified2026-06-17
CVSS vectorAV:N/AC:M/Au:N/C:N/I:P/A:P
Description
Wind River VxWorks before 5.5.1, 6.5.x through 6.7.x before 6.7.1.1, 6.8.x before 6.8.3, 6.9.x before 6.9.4.4, and 7.x before 7 ipnet_coreip 1.2.2.0, as used on Schneider Electric SAGE RTU devices before J2 and other devices, does not properly generate TCP initial sequence number (ISN) values, which makes it easier for remote attackers to spoof TCP sessions by predicting an ISN value.
Weakness classification
- CWE-330: Use of Insufficiently Random Values
Primary references
- ics-cert@hq.dhs.gov — Patch, Third Party Advisory
- ics-cert@hq.dhs.gov — Third Party Advisory, VDB Entry
- ics-cert@hq.dhs.gov — Third Party Advisory, VDB Entry
- ics-cert@hq.dhs.gov — Third Party Advisory, VDB Entry
- ics-cert@hq.dhs.gov — Third Party Advisory, US Government Resource
- ics-cert@hq.dhs.gov — Third Party Advisory, US Government Resource
- ics-cert@hq.dhs.gov — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource