CVE-2025-4613Public exploitNetwork attack vector

Code execution via crafted template asset URL

Published Jun 12, 2025 · Updated Feb 26, 2026

Path traversal in Google Web Designer before 16.3.0.0407 on Windows allows remote attackers to execute code via a malicious ad template. The template handler accepts a crafted remoteAssets URL that reaches the internal ninja-shell browser API, whose URL parsing permits injection of Chrome launch arguments that load an attacker-controlled executable. A user must download the template, open or use it in the application, and interact with the affected workflow; the payload then runs with that user's privileges.

CVSS severity7.1
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Google Web Designer before 16.3.0.0407 on Windows allows remote attackers to execute code via a malicious ad template. The template handler accepts a crafted remoteAssets URL that reaches the internal ninja-shell browser API, whose URL parsing permits injection of Chrome launch arguments that load an attacker-controlled executable. A user must download the template, open or use it in the application, and interact with the affected workflow; the payload then runs with that user's privileges.

The record

CVE
CVE-2025-4613
Published
Jun 12, 2025
Updated
Feb 26, 2026
Vendor
Go standard library
Product
Google Web Designer
Classifications
CWE-22, CWE-20, CAPEC-175, T1203, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=0 <16.3.0.0407

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Web Designerversion=0 <16.3.0.0407

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.1Google Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L/S:N/AU:N/R:U/V:D/RE:L

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-20Improper Input Validation
CAPEC-175Code Inclusion
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

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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