VulnerabilityModified

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.

HIGH 7.5EPSS 1.08%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 1.08% probability · 63th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: tendacn/g1 firmware · tendacn/g3 firmware
Source: cve@mitre.org

References

https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.mdBroken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/218959Third Party Advisory
https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.mdBroken Link

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.