What is CVE-2025-4849?

CVE-2025-4849 is a medium-severity vulnerability in Totolink N300rh, classified under Command Injection. CVSS score: 6.3/10. Published 2025-05-18.

How severe is CVE-2025-4849?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Totolink N300rh

CVE-2025-4849

A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101. It has been rated as critical. Affected by this issue is the function CloudACMunualUpdateUserdata of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument url lead…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.024 (85.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Totolink N300rh — versions 6.1c.1390_B20191101

Weakness classification (CWE)

References

VDB-309320 | TOTOLINK N300RH cstecgi.cgi CloudACMunualUpdateUserdata command injection (vdb-entry, technical-description)
VDB-309320 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #575072 | TOTOLINK N300RH_V4 V6.1c.1390_B20191101 Command execution (third-party-advisory)
github.com/CH13hh/tmp_store_cc/blob/main/tt/ta/m1.md (broken-link, exploit)
www.totolink.net/ (product)

Frequently asked questions

What is CVE-2025-4849?: CVE-2025-4849 is a medium-severity vulnerability in Totolink N300rh, classified under Command Injection. CVSS score: 6.3/10. Published 2025-05-18.
How severe is CVE-2025-4849?: Medium severity. CVSS v3 base score is 6.3 out of 10.