← Vulnerability feed

Vulnerability record · CVE-2015-3963 · published 4 August 2015

CVE-2015-3963: Windriver vxworks vulnerability

Windriver · Vxworks

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.

5.8 CVSS 2.0 Medium EPSS 3.7% · top 10.3% CWE-330 · CWE-330
5.8CVSS 2.0 base score
3.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:N/C:N/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.schneider-electric.com/ww/en/download/document/SEVD-2015-162-01 PatchThird Party Advisory
http://www.securityfocus.com/bid/75302 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032730 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033181 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-15-169-01 Third Party AdvisoryUS Government Resource
https://ics-cert.us-cert.gov/advisories/ICSA-15-169-01A Third Party AdvisoryUS Government Resource
https://security.netapp.com/advisory/ntap-20160324-0001/ Third Party Advisory
http://www.schneider-electric.com/ww/en/download/document/SEVD-2015-162-01 PatchThird Party Advisory
http://www.securityfocus.com/bid/75302 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1032730 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033181 Third Party AdvisoryVDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-15-169-01 Third Party AdvisoryUS Government Resource
https://ics-cert.us-cert.gov/advisories/ICSA-15-169-01A Third Party AdvisoryUS Government Resource
https://security.netapp.com/advisory/ntap-20160324-0001/ Third Party Advisory

Track CVE-2015-3963 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2013-0714Windriver vxworks improper input validation vulnerabilityIPSSH (aka the SSH server) in Wind River VxWorks 6.5 through 6.9 allows remote attackers to execute arbitrary code or cause a denial of service (daem…EPSS 6.4%9.8CVE-2020-35198Windriver vxworks integer overflow vulnerabilityAn issue was discovered in Wind River VxWorks 7. The memory allocator has a possible integer overflow in calculating a memory block's size to be allo…EPSS 2.5%9.8CVE-2021-29999Windriver vxworks out-of-bounds write vulnerabilityAn issue was discovered in Wind River VxWorks through 6.8. There is a possible stack overflow in dhcp server.EPSS 1.8%9.8CVE-2021-29998Windriver vxworks out-of-bounds write vulnerabilityAn issue was discovered in Wind River VxWorks before 6.5. There is a possible heap overflow in dhcp client.EPSS 2.4%9.8CVE-2016-20009Windriver vxworks out-of-bounds write vulnerabilityA DNS client stack-based buffer overflow in ipdnsc_decode_name() affects Wind River VxWorks 6.5 through 7. NOTE: This vulnerability only affects prod…EPSS 1.9%9.8CVE-2019-12262Windriver vxworks vulnerabilityWind River VxWorks 6.6, 6.7, 6.8, 6.9 and 7 has Incorrect Access Control in the RARP client component. IPNET security vulnerability: Handling of unso…EPSS 4.1%9.8CVE-2019-12261Windriver vxworks classic buffer overflow vulnerabilityWind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). This is an IPNET security vulnerability: TCP Urg…EPSS 9.0%9.8CVE-2019-12260Windriver vxworks classic buffer overflow vulnerabilityWind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). This is an IPNET security vulnerability: TCP Urgent Pointer…EPSS 23%

Source: NIST National Vulnerability Database (record CVE-2015-3963), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.