Medium severity · published Mar 31, 2022
CVE-2021-43662
totolink EX300_v2, ver V4.0.3c.140_B20210429 and A720R ,ver V4.1.5cu.470_B20200911 have an issue which causes uncontrolled resource consumption
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
totolink EX300_v2, ver V4.0.3c.140_B20210429 and A720R ,ver V4.1.5cu.470_B20200911 have an issue which causes uncontrolled resource consumption.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
A720r Firmware · Totolink
4.1.5cu.470_b20200911 · source: NVD
EV
Ex300 V2 Firmware · Totolink
4.0.3c.140_b20210429 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43662
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43662
Exploit
https://github.com/chibataiki/iot-vuls/blob/main/totolink/dos.md
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