CVE-2025-0869Public exploitNetwork attack vector

Unauthenticated script execution via browserLang injection

Published Jan 30, 2025 · Updated Feb 7, 2025

Cross-site scripting in the login component of Cianet ONU GW24AC 20250127 allows remote attackers to execute script via a crafted request. The login handler returns the unneutralized _browserLang value in its response, letting a cross-origin POST close the existing script context and inject a new script element. No authentication is required, but a user must open attacker-controlled HTML that submits the request; the demonstrated consequence is script execution in the gateway interface.

CVSS severity5.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in the login component of Cianet ONU GW24AC 20250127 allows remote attackers to execute script via a crafted request. The login handler returns the unneutralized _browserLang value in its response, letting a cross-origin POST close the existing script context and inject a new script element. No authentication is required, but a user must open attacker-controlled HTML that submits the request; the demonstrated consequence is script execution in the gateway interface.

The record

CVE
CVE-2025-0869
Published
Jan 30, 2025
Updated
Feb 7, 2025
Vendor
Cianet
Product
ONU GW24AC
Classifications
CWE-94, CWE-79, T1059.007, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=20250127

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cianet · ONU GW24ACversion=20250127

Published CVSS scores

4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDB CNAAV:N/AC:L/Au:N/C:N/I:P/A:N
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript
T1203Exploitation for Client Execution

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo