5.8

CVE-2015-3963: windriver vxworks Use of Insufficiently Random Values

CVSS: 5.8v2.0MediumModified
Published 04-08-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-3963 is a medium (CVSS 5.8) Use of Insufficiently Random Values vulnerability in windriver vxworks. EPSS estimates a 3.74% chance of exploitation in the next 30 days, higher than 89.7% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
3.74%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-08-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

3.74%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.74% on 19-09-2026

19-09-202619-10-2026
EPSS score
3.74%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Windriver1 product
  • vxworks≥ 6.5, ≤ 6.6 | ≥ 6.7, < 6.7.1.1 | ≥ 6.8, < 6.8.3 | ≥ 6.9, < 6.9.4.4 | 6.6.3 | 6.6.4 | 6.6.4.1 | 7.0

1 vendor · 1 product

References

7 links