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Vulnerability record · CVE-2025-55848 · published 26 September 2025

CVE-2025-55848: Dlink dir-823x firmware command injection vulnerability

Dlink · Dir 823x Firmware

An issue was discovered in DIR-823 firmware 20250416. There is an RCE vulnerability in the set_cassword settings interface, as the http_casswd parameter is not filtered by '&'to allow injection of reverse connection commands.

8.8 CVSS 3.1 High EPSS 0.41% · top 67.6% CWE-77 · Command injection
8.8CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in DIR-823 firmware 20250416. There is an RCE vulnerability in the set_cassword settings interface, as the http_casswd parameter is not filtered by '&'to allow injection of reverse connection commands.

CVSS:3.1/AV:A/AC:L/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://github.com/meigui637/iot_zone/blob/main/%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E.md ExploitThird Party Advisory
https://www.dlink.com/en/security-bulletin/ Product

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Related vulnerabilities

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

7.2CVE-2025-29635D-Link DIR-823X command injection in set_prohibiting handlerD-Link DIR-823X firmware (240126 and 240802) contains a command injection flaw in the /goform/set_prohibiting POST handler. An attacker who already h…KEVEPSS 88%analysed9.8CVE-2025-29042Dlink dir-823x firmware os command injection vulnerabilityAn issue in dlink DIR 832x 240802 allows a remote attacker to execute arbitrary code via the macaddr key value to the function 0x42232cEPSS 2.3%9.8CVE-2025-29043Dlink dir-823x firmware os command injection vulnerabilityAn issue in dlink DIR 832x 240802 allows a remote attacker to execute arbitrary code via the function 0x417234EPSS 1.8%9.8CVE-2025-29040Dlink dir-823x firmware os command injection vulnerabilityAn issue in dlink DIR 823x 240802 allows a remote attacker to execute arbitrary code via the target_addr key value and the function 0x41737cEPSS 1.4%9.8CVE-2025-29041Dlink dir-823x firmware os command injection vulnerabilityAn issue in dlink DIR 823x 240802 allows a remote attacker to execute arbitrary code via the target_addr key value and the function 0x41710cEPSS 1.4%9.8CVE-2024-39962Dlink dir-823x firmware code injection vulnerabilityD-Link DIR-823X AX3000 Dual-Band Gigabit Wireless Router v21_D240126 was discovered to contain a remote code execution (RCE) vulnerability in the ntp…EPSS 2.1%8.7CVE-2025-0492Dlink dir-823x firmware improper resource shutdown vulnerabilityA vulnerability has been found in D-Link DIR-823X 240126/240802 and classified as critical. Affected by this vulnerability is the function FUN_004122…EPSS 1.9%7.3CVE-2026-2210Dlink dir-823x firmware command injection vulnerabilityA vulnerability has been found in D-Link DIR-823X 250416. This affects the function sub_4211C8 of the file /goform/set_filtering. Such manipulation l…EPSS 4.0%

Source: NIST National Vulnerability Database (record CVE-2025-55848), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.