Vulnerability · Published May 5, 2025 · Assigned by VulDB

CVE-2025-4271TOTOLINK A720R cstecgi.cgi information disclosure

Medium 5.3

In plain English

A medium-severity information exposure in A720R from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.7%top 48.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument topicurl with the input showSyslog leads to information disclosure. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	A720R	4.1.5cu.374

Weakness: CWE-200, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

VDB-307375 | TOTOLINK A720R cstecgi.cgi information disclosure vdb-entry, technical-description
VDB-307375 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #563444 | TOTOLINK A720R V4.1.5cu.374 Exposure of Sensitive System Information to an Unauthorized Cont third-party-advisory
https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/showSyslog.md exploit
https://www.totolink.net/ product