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Vulnerability record · CVE-2026-2876 · published 21 February 2026

CVE-2026-2876: Tenda a18 firmware memory buffer overflow vulnerability

Tenda · A18 Firmware

A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

7.4 CVSS 4.0 High EPSS 0.96% · top 39.9% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.96%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

A vulnerability was determined in Tenda A18 15.13.07.13. This affects the function parse_macfilter_rule of the file /goform/setBlackRule. This manipulation of the argument deviceList causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/master-abc/cve/issues/38 Issue Tracking
https://vuldb.com/?ctiid.347114 Permissions RequiredVDB Entry
https://vuldb.com/?id.347114 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.754675 Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-50585Tenda a18 firmware out-of-bounds write vulnerabilityTenda A18 v15.13.07.09 was discovered to contain a stack overflow via the devName parameter in the formSetDeviceName function.EPSS 0.70%8.8CVE-2024-32305Tenda a18 firmware stack-based buffer overflow vulnerabilityTenda A18 v15.03.05.05 firmware has a stack overflow vulnerability located via the PPW parameter in the fromWizardHandle function.EPSS 0.61%7.5CVE-2023-39827Tenda a18 firmware out-of-bounds write vulnerabilityTenda A18 V15.13.07.09 was discovered to contain a stack overflow via the rule_info parameter in the formAddMacfilterRule function.EPSS 0.82%7.5CVE-2023-39828Tenda a18 firmware out-of-bounds write vulnerabilityTenda A18 V15.13.07.09 was discovered to contain a stack overflow via the security parameter in the formWifiBasicSet function.EPSS 0.82%7.5CVE-2023-39829Tenda a18 firmware out-of-bounds write vulnerabilityTenda A18 V15.13.07.09 was discovered to contain a stack overflow via the wpapsk_crypto2_4g parameter in the fromSetWirelessRepeat function.EPSS 0.82%7.5CVE-2022-44931Tenda a18 firmware out-of-bounds write vulnerabilityTenda A18 v15.13.07.09 was discovered to contain a stack overflow via the security_5g parameter at /goform/WifiBasicSet.EPSS 0.88%7.5CVE-2022-44932Tenda a18 firmware improper access control vulnerabilityAn access control issue in Tenda A18 v15.13.07.09 allows unauthenticated attackers to access the Telnet service.EPSS 0.68%7.4CVE-2026-2877Tenda a18 firmware memory buffer overflow vulnerabilityA vulnerability has been found in Tenda A18 15.13.07.13. This affects the function strcpy of the file /goform/WifiExtraSet of the component Httpd Ser…EPSS 0.96%

Source: NIST National Vulnerability Database (record CVE-2026-2876), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.