Critical severity · published Dec 22, 2021
CVE-2021-21887
A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)
9.1
CVSS
3.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
P2
Premierwave 2050 Firmware · Lantronix
8.9.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21887
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21887
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1331
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