Buffer overflow in Lantronix Premierwave 2050
CVE-2021-21889
A stack-based buffer overflow vulnerability exists in the Web Manager Ping 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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Lantronix Premierwave 2050
- Lantronix Premierwave 2050 Firmware — versions 8.9.0.0
- Lantronix — versions Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2021-1333 (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21889?
- CVE-2021-21889 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under Stack-based Buffer Overflow. CVSS score: 9.9/10. Published 2021-12-22.
- How severe is CVE-2021-21889?
- Critical severity. CVSS v3 base score is 9.9 out of 10.