CVE-2025-4271

Name: CVE-2025-4271
Creator: NVD / NIST
Published: 2025-05-05T08:15:15.79+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2025-4271 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been declared as problematic. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.53%

40.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Totolink	A720r Firmware	4.1.5cu.374

References

https://github.com/at0de/my_vulns/blob/main/TOTOLINK/A720R/showSyslog.mdExploit
https://vuldb.com/?ctiid.307375Permissions Required, VDB Entry
https://vuldb.com/?id.307375Third Party Advisory, VDB Entry
https://vuldb.com/?submit.563444Third Party Advisory, VDB Entry
https://www.totolink.net/Product

Timeline

Published: May 5, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-4271?

How severe is CVE-2025-4271?

CVE-2025-4271 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4271?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-4271?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST