CVE-2025-8153Network attack vector

Browser script execution via crafted router URL

Published Sep 17, 2025 · Updated Sep 17, 2025

Cross-site scripting in NEC UNIVERGE IX and IX-R/IX-V router HTTP(S) services allows remote attackers to run scripts via a crafted URL. NEC identifies the HTTP(S) server as the locus but has not disclosed the affected parameter or precise output-neutralization failure. A user must follow the URL while HTTP(S) is enabled; on UNIVERGE IX, an authenticated Web Console session lets the script run CLI commands with that user's privileges.

CVSS severity5.1
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in NEC UNIVERGE IX and IX-R/IX-V router HTTP(S) services allows remote attackers to run scripts via a crafted URL. NEC identifies the HTTP(S) server as the locus but has not disclosed the affected parameter or precise output-neutralization failure. A user must follow the URL while HTTP(S) is enabled; on UNIVERGE IX, an authenticated Web Console session lets the script run CLI commands with that user's privileges.

The record

CVE
CVE-2025-8153
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
NEC Corporation
Product
UNIVERGE IX-R/IX-V
Classifications
CWE-79, T1059.008, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=Ver1.3.16, Ver1.3.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NEC Corporation · UNIVERGE IX-R/IX-Vversion=Ver1.3.16, Ver1.3.21
NEC Corporation · UNIVERGE IXversion=from Ver.10.10.21 to Ver.10.10.31, Ver.10.11.6; version=from Ver.10.8.21 to Ver.10.8.36; version=from Ver.10.9.11 to Ver.10.9.24; version=from Ver.9.5 to Ver.10.7

Published CVSS scores

6.1NEC CorporationCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1NEC CorporationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.008Network Device CLI
T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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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