CVE-2025-6620Public exploitNetwork attack vector

Authenticated command execution via unchecked FileName parameter

Published Jun 25, 2025 · Updated Jun 26, 2025

OS command injection in TOTOLINK CA300-PoE 6.2c.884 allows remote authenticated users to execute arbitrary commands via a crafted request. The setUpgradeUboot function in upgrade.so passes the request-controlled FileName value to the operating system without validating command content. A valid management-session cookie is required, and successful exploitation runs an attacker-selected shell command on the access point.

CVSS severity6.3
Medium
EPSS probability2.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TOTOLINK CA300-PoE 6.2c.884 allows remote authenticated users to execute arbitrary commands via a crafted request. The setUpgradeUboot function in upgrade.so passes the request-controlled FileName value to the operating system without validating command content. A valid management-session cookie is required, and successful exploitation runs an attacker-selected shell command on the access point.

The record

CVE
CVE-2025-6620
Published
Jun 25, 2025
Updated
Jun 26, 2025
Vendor
TOTOLINK
Product
CA300-PoE
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.2c.884

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · CA300-PoEversion=6.2c.884

Published CVSS scores

2.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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