What is CVE-2021-29997?

CVE-2021-29997 is a medium-severity vulnerability in Windriver Vxworks, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2021-04-13.

How severe is CVE-2021-29997?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Out-of-bounds Read in Windriver Vxworks

CVE-2021-29997

An issue was discovered in Wind River VxWorks 7 before 21.03. A specially crafted packet may lead to buffer over-read on IKE.

Vulnerability class: Buffer Overflow

Published 2021-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.010 (62.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Windriver Vxworks

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

support2.windriver.com/index.php (Vendor Advisory)
support2.windriver.com/index.php (Vendor Advisory)

Frequently asked questions

What is CVE-2021-29997?: CVE-2021-29997 is a medium-severity vulnerability in Windriver Vxworks, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2021-04-13.
How severe is CVE-2021-29997?: Medium severity. CVSS v3 base score is 5.3 out of 10.