CVE-2024-8382: mozilla firefox Improper Check for Dropped Privileges
Vulnerability summary
CVE-2024-8382 is a high (CVSS 8.8) Improper Check for Dropped Privileges vulnerability in mozilla firefox. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 29 · Related 11Timeline
- 03-09-2024PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
Description
Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · WolfiEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.60%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
0.00 pp
From 0.60% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu9 products
- firefox< 130.0+build2-0ubuntu0.20.04.1
- mozjs102All versions (No fix recorded)
- mozjs115All versions (No fix recorded)
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 130 | < 130.0
- firefox_esr≥ unspecified, < 128.2 | ≥ unspecified, < 115.15 | < 115.15 | ≥ 128.0, < 128.2
- thunderbird≥ unspecified, < 128.2 | ≥ unspecified, < 115.15
Chainguard2 products
- firefox< 130.0-r0
- firefox-esr< 128.2.0-r0
Debian2 products
- firefox-esr< 115.15.0esr-1~deb12u1 | < 115.15.0esr-1
- thunderbird< 1:115.15.0-1~deb12u1 | < 1:128.2.0esr-1
Wolfi1 product
- firefox< 130.0-r0
5 vendors · 17 products
