RCE in Dlink Dir-823x
CVE-2025-55848
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Dlink Dir-823x
- Dlink Dir-823x Firmware — versions 250416
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dlink.com/en/security-bulletin/ (Product)
- github.com/meigui637/iot_zone/blob/main/命令执行漏洞.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55848?
- CVE-2025-55848 is a high-severity vulnerability in Dlink Dir-823x, classified under Command Injection. CVSS score: 8.8/10. Published 2025-09-26.
- How severe is CVE-2025-55848?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-55848 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.