High severity · published Feb 4, 2022
CVE-2021-45989
Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function guestWifiRuleRefresh
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function guestWifiRuleRefresh. This vulnerability allows attackers to cause a Denial of Service (DoS) via the qosGuestUpstream and qosGuestDownstream parameters.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GF
G1 Firmware · Tendacn
15.11.0.17(9502)_cn · source: NVD
GF
G3 Firmware · Tendacn
15.11.0.17(9502)_cn · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45989
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45989
Broken Link
https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.md
Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/218959
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