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Vulnerability record · CVE-2023-27359 · published 3 May 2024

CVE-2023-27359: Tp-link archer ax21 firmware race condition vulnerability

Tp Link · Archer Ax21 Firmware

TP-Link AX1800 hotplugd Firewall Rule Race Condition Vulnerability. This vulnerability allows remote attackers to gain access to LAN-side services on affected installations of TP-Link Archer AX21 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the hotplugd daemon. The issue results from firewall rule handling that allows an attacker access to resources that should be available to the LAN interface only. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the root user. . Was ZDI-CAN-19664.

8.1 CVSS 3.1 High EPSS 1.2% · top 33.9% CWE-362 · Race condition
8.1CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

TP-Link AX1800 hotplugd Firewall Rule Race Condition Vulnerability. This vulnerability allows remote attackers to gain access to LAN-side services on affected installations of TP-Link Archer AX21 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the hotplugd daemon. The issue results from firewall rule handling that allows an attacker access to resources that should be available to the LAN interface only. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the root user. . Was ZDI-CAN-19664.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://www.zerodayinitiative.com/advisories/ZDI-23-452/ Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-452/ Third Party Advisory

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Related vulnerabilities

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

8.8CVE-2023-1389TP-Link Archer AX21 web interface command injection via country parameterThe /cgi-bin/luci;stok=/locale endpoint on the TP-Link Archer AX21 (AX1800) web management interface fails to sanitize the country parameter before p…KEVEPSS 100%analysed9.8CVE-2023-31710Tp-link archer ax21 firmware out-of-bounds write vulnerabilityTP-Link Archer AX21(US)_V3_1.1.4 Build 20230219 and AX21(US)_V3.6_1.1.4 Build 20230219 are vulnerable to Buffer Overflow.EPSS 0.70%8.8CVE-2023-27346Tp-link archer ax21 firmware stack-based buffer overflow vulnerabilityTP-Link AX1800 Firmware Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers…EPSS 0.71%8.8CVE-2023-27332Tp-link archer ax21 firmware stack-based buffer overflow vulnerabilityTP-Link Archer AX21 tdpServer Logging Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent att…EPSS 0.72%6.8CVE-2023-27333Tp-link archer ax21 firmware stack-based buffer overflow vulnerabilityTP-Link Archer AX21 tmpServer Command 0x422 Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjace…EPSS 0.74%5.5CVE-2025-39964Linux kernel af_alg race condition allows concurrent socket writesThe Linux kernel's af_alg crypto socket implementation did not prevent two concurrent writes to the same socket, allowing data to be interleaved unpr…KEVEPSS 1.00%analysed7.0CVE-2025-62215Windows Kernel race condition and double free privilege escalationA race condition combined with a double free in the Windows Kernel lets a locally authenticated attacker corrupt kernel memory and elevate privileges…KEVEPSS 6.0%analysed7.5CVE-2023-36884Microsoft Windows Search race condition allows remote code executionCVE-2023-36884 is a race condition (CWE-362) in Microsoft Windows Search that permits remote code execution. It affects a broad set of Windows 10, Wi…KEVEPSS 99%analysed

Source: NIST National Vulnerability Database (record CVE-2023-27359), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.