CVE-2023-43955Public exploitNetwork attack vector

Code execution via exposed WebView JavaScript bridge

Published Dec 27, 2023 · Updated Aug 2, 2024

Code injection in Fedirtsapana TV Bro 2.0.0 and earlier allows remote attackers to execute code and create files through an external intent. The exported MainActivity loads attacker-chosen URIs in a WebView that exposes TVBro.takeBlobDownloadData, which decodes Base64 content and saves it under a supplied filename. No app permission or user interaction is required; crafted JavaScript can create or download arbitrary files and consume device storage.

CVSS severity9.8
Critical
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Fedirtsapana TV Bro 2.0.0 and earlier allows remote attackers to execute code and create files through an external intent. The exported MainActivity loads attacker-chosen URIs in a WebView that exposes TVBro.takeBlobDownloadData, which decodes Base64 content and saves it under a supplied filename. No app permission or user interaction is required; crafted JavaScript can create or download arbitrary files and consume device storage.

The record

CVE
CVE-2023-43955
Published
Dec 27, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8INCIBE-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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')
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

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Your stack

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