Skip to content
Fencer Intel
critical 9.8

CVE-2021-29999 json

An issue was discovered in Wind River VxWorks through 6.8.

published 5y ago modified 4mo ago also EUVD-2021-16458

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

An issue was discovered in Wind River VxWorks through 6.8. There is a possible stack overflow in dhcp server.

Is CVE-2021-29999 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-058-01 updated cvss 9.8

Schneider Electric communication modules for Modicon M580 and Quantum controllers (Update B)

  • Schneider Electric 140CRA31200 (Quantum RIO Drop) 140CRA31200 <V02.80 Schneider Electric 140CRA31908 (M580 Quantum S908 RIO Drop Adapter) 140CRA31908 <V02.80
    affected: mitigation “Schneider Electric has identified the following specific remediations and mitigations users can apply to reduce risk:” se.com
  • Schneider Electric Modicon M580 communication modules BMECRA BMECRA31210 <SV02.80
    affected: vendor fix, mitigation “Schneider Electric has identified the following specific remediations and mitigations users can apply to reduce risk:” se.com
  • Schneider Electric Modicon M580 communication modules BMENOC BMENOC0321 <SV1.10
    affected: vendor fix, mitigation “Schneider Electric has identified the following specific remediations and mitigations users can apply to reduce risk:” se.com
  • Schneider Electric Modicon M580/Quantum communication modules BMXCRA BMXCRA31200 <SV02.80
    affected: vendor fix, mitigation “Schneider Electric has identified the following specific remediations and mitigations users can apply to reduce risk:” se.com
  • Schneider Electric Modicon M580/Quantum communication modules BMXCRA BMXCRA31210 <SV02.80
    affected: mitigation “Schneider Electric has identified the following specific remediations and mitigations users can apply to reduce risk:” se.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

3.10% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.