CVE-2025-6432
published 2025-06-24CVE-2025-6432: When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not…
PriorityP344high8.6CVSS 3.1
AVNACLPRNUINSUCHILAL
EPSS
0.29%
20.7th percentile
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 140.0-1 (sid) | firefox 140.0-1 (sid) |
| mozilla | firefox | < 140.0 | 140.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | >= 0 < 1:140.7.1+build1-0ubuntu0.22.04.1 | 1:140.7.1+build1-0ubuntu0.22.04.1 |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
osv8.6HIGH
vendor_debian8.6HIGH
vendor_redhat8.6HIGH
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2025-8031 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
firefox: DNS Requests leaked outside of a configured SOCKS proxy
vendor_redhat·2025-06-24·CVSS 8.6
CVE-2025-6432 [HIGH] firefox: DNS Requests leaked outside of a configured SOCKS proxy
firefox: DNS Requests leaked outside of a configured SOCKS proxy
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox < 140 and Thunderbird < 140.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterpris
Debian
CVE-2025-6432: firefox - When Multi-Account Containers was enabled, DNS requests could have bypassed a SO...
vendor_debian·2025·CVSS 8.6
CVE-2025-6432 [HIGH] CVE-2025-6432: firefox - When Multi-Account Containers was enabled, DNS requests could have bypassed a SO...
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox < 140 and Thunderbird < 140.
Scope: local
sid: resolved (fixed in 140.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-54: CVE-2025-6432
vendor_mozilla·CVSS 8.6
CVE-2025-6432 [HIGH] Mozilla Foundation Security Advisory 2025-54: CVE-2025-6432
Mozilla Foundation Security Advisory 2025-54
CVE: CVE-2025-6432
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140
Mozilla
Mozilla Foundation Security Advisory 2025-51: CVE-2025-6432
vendor_mozilla·CVSS 8.6
CVE-2025-6432 [HIGH] Mozilla Foundation Security Advisory 2025-51: CVE-2025-6432
Mozilla Foundation Security Advisory 2025-51
CVE: CVE-2025-6432
Product: Firefox
Impact: high
Fixed in: Firefox 140
GHSA
GHSA-43h2-r954-f6w6: When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not
ghsa_unreviewed·2025-06-26
CVE-2025-6432 [HIGH] CWE-200 GHSA-43h2-r954-f6w6: When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox < 140.
OSV
CVE-2025-6432: When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not
osv·2025-06-24·CVSS 8.6
CVE-2025-6432 [HIGH] CVE-2025-6432: When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not
When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox < 140 and Thunderbird < 140.
No detection rules found.
No public exploits indexed.
2025-06-24
Published