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CVE-2021-21887A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4…

Description

A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Timeline

  1. ID reserved

    By talos

  2. · 12 months later

    Published

  3. · 3 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2021-21887, by who scored it
Scored byCVSSScoreVector
talosCNA (assigner)3.0Critical9.1CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVDNVD · Modified3.1Critical9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS (exploitation in 30 days)
3.1% · top 12% of all CVEs (13 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.

Affected products

  • Lantronix

    • affected Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .