How severe is CVE-2023-27359?

CVE-2023-27359 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-27359 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27359?

CVE-2023-27359 affects Tp-link Archer Ax21 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27359?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-27359 have an EU (EUVD) identifier?

Yes. CVE-2023-27359 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-31135.

When was CVE-2023-27359 published?

CVE-2023-27359 was published on 2024-05-03 and last updated on 2026-06-17.

CVE-2023-27359

CVE-2023-27359 is a high-severity vulnerability in Tp-link Archer Ax21 Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-31135
Weakness: CWE-362
Affected product: Tp-link Archer Ax21 Firmware
Published: 2024-05-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-27359?: 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.
How severe is CVE-2023-27359?: CVE-2023-27359 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-27359 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27359?: CVE-2023-27359 affects Tp-link Archer Ax21 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27359?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-27359 have an EU (EUVD) identifier?: Yes. CVE-2023-27359 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-31135.
When was CVE-2023-27359 published?: CVE-2023-27359 was published on 2024-05-03 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-23-452/

Affected products (1)

cpe:2.3:o:tp-link:archer_ax21_firmware:1.1.1:build20220603:*:*:*:*:*:*

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