CVE-2023-37455Public exploitNetwork attack vector

Media permission spoofing via background-tab prompt overlay

Published Jul 12, 2023 · Updated Nov 7, 2024

UI spoofing in Firefox for iOS before 115 allows remote attackers to present a background site's media prompt over a foreground site. The requestMediaCapturePermissionFor delegate displayed camera or microphone prompts without first confirming that the requesting WKWebView was the current tab. A user must open attacker-controlled HTTPS content, move to another tab, and approve the misattributed request, granting the background site camera or microphone access.

CVSS severity5.4
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI spoofing in Firefox for iOS before 115 allows remote attackers to present a background site's media prompt over a foreground site. The requestMediaCapturePermissionFor delegate displayed camera or microphone prompts without first confirming that the requesting WKWebView was the current tab. A user must open attacker-controlled HTTPS content, move to another tab, and approve the misattributed request, granting the background site camera or microphone access.

The record

CVE
CVE-2023-37455
Published
Jul 12, 2023
Updated
Nov 7, 2024
Vendor
Mozilla
Product
Firefox for iOS
Classifications
CWE-1021
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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?

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

  1. Affected versionversion=unspecified <115

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefox for iOSversion=unspecified <115

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames

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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