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ExploitedNot in CISA KEV yet

CVE-2025-4270

Exploitation confirmed. First attested on 2025-05-05 by GCVE · previdian, GCVE · shadowserver.

  • Published2025-05-05
  • WeaknessCWE-200 · CWE-284

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg leads to information disclosure. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Timeline

dates in UTC
  1. 2025-05-0507:31Listed as exploited by GCVEGCVE
  2. 2025-05-0508:15CVE publishedNVD
  3. 2025-07-3012:48Exploitation first reportedGCVE

Versions per branch

NVD
Totolink a720r firmwareversion to verify
BranchAffectedFixed in
4.1= 4.1.5cu.374no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • TOTOLINK A720R
    Affected
    • = 4.1.5cu.374no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-05-05

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • GCVEexploitation2025-05-05
  • CISA-ADPSSVC decisionpoc2025-05-05
  • CNACVSS 4.06.9known since 2026-10-23
  • CNACVSS 3.15.3known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNACVSS 2.05known since 2026-10-23
  • CNAweakness (CWE)CWE-200, CWE-284known since 2026-10-23
  • FIRST EPSSEPSS score14.0 %read 2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 4.0 vector
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
Published
2025-05-05
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-4jh5-95f7-hf6w

Frequently asked questions

What is CVE-2025-4270?

A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an unknown function of the file /cgi-bin/cstecgi.cgi of the component Config Handler. The manipulation of the argument topicurl with the input getInitCfg/getSysStatusCfg leads to information disclosure. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Is CVE-2025-4270 actively exploited?

A proof-of-concept exploit exists for CVE-2025-4270, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-4270?

CVE-2025-4270 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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