CVE-2024-10462Public exploitNetwork attack vector

Permission prompt origin spoofing via clipped hostnames

Published Oct 29, 2024 · Updated Nov 3, 2025

Origin spoofing in Firefox before 132, Firefox ESR before 128.4, and Thunderbird before 128.4 or 132 allows remote attackers to mislabel prompts. PopupNotifications placed the full host in a nonwrapping name field, so overflow clipped the registrable-domain suffix and left a trusted-looking prefix visible. A victim must visit an attacker-controlled long hostname and act on its media-permission prompt, which can attribute camera or microphone access to a spoofed origin.

CVSS severity6.5
Medium
EPSS probability0.53%
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

Origin spoofing in Firefox before 132, Firefox ESR before 128.4, and Thunderbird before 128.4 or 132 allows remote attackers to mislabel prompts. PopupNotifications placed the full host in a nonwrapping name field, so overflow clipped the registrable-domain suffix and left a trusted-looking prefix visible. A victim must visit an attacker-controlled long hostname and act on its media-permission prompt, which can attribute camera or microphone access to a spoofed origin.

The record

CVE
CVE-2024-10462
Published
Oct 29, 2024
Updated
Nov 3, 2025
Vendor
Mozilla
Product
Firefox
Classifications
CWE-290, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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=0 <132
  2. Affected versionversion=unspecified <132

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <132; version=unspecified <132
Mozilla · Thunderbirdversion=0 <128.4; version=0 <132; version=unspecified <128.4; version=unspecified <132
Mozilla · Firefox ESRversion=0 <128.4; version=unspecified <128.4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.

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-290Authentication Bypass by Spoofing
T1036Masquerading

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