CVE-2025-4083
published 2025-04-29CVE-2025-4083: A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level…
PriorityP347critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EPSS
0.38%
29.9th percentile
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 138.0-1 (sid) | firefox 138.0-1 (sid) |
| debian | firefox-esr | < firefox 138.0-1 (sid) | firefox 138.0-1 (sid) |
| debian | thunderbird | < firefox 138.0-1 (sid) | firefox 138.0-1 (sid) |
| mozilla | firefox | < 115.23 | 115.23 |
| mozilla | firefox | < 138.0 | 138.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 128.0 < 128.10 | 128.10 |
| mozilla | thunderbird | < 128.10.0 | 128.10.0 |
| mozilla | thunderbird | < 138.0 | 138.0 |
| mozilla | thunderbird | >= 0 < 1:128.10.1esr-1~deb11u1 | 1:128.10.1esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.10.0esr-1~deb12u1 | 1:128.10.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.10.0esr-1 | 1:128.10.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.10.0esr-1 | 1:128.10.0esr-1 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
osv9.1CRITICAL
vendor_debian9.1CRITICAL
vendor_redhat9.1CRITICAL
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2025-07-22
CVE-2025-4083 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: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart thunderbird to
make all the necessary changes.
Red Hat
firefox: thunderbird: Process isolation bypass using "javascript:" URI links in cross-origin frames
vendor_redhat·2025-04-29·CVSS 9.1
CVE-2025-4083 [CRITICAL] CWE-653 firefox: thunderbird: Process isolation bypass using "javascript:" URI links in cross-origin frames
firefox: thunderbird: Process isolation bypass using "javascript:" URI links in cross-origin frames
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enablin
Debian
CVE-2025-4083: firefox - A process isolation vulnerability in Thunderbird stemmed from improper handling ...
vendor_debian·2025·CVSS 9.1
CVE-2025-4083 [CRITICAL] CVE-2025-4083: firefox - A process isolation vulnerability in Thunderbird stemmed from improper handling ...
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
Scope: local
sid: resolved (fixed in 138.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-31: CVE-2025-4083
vendor_mozilla·CVSS 9.1
CVE-2025-4083 [CRITICAL] Mozilla Foundation Security Advisory 2025-31: CVE-2025-4083
Mozilla Foundation Security Advisory 2025-31
CVE: CVE-2025-4083
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 138
Mozilla
Mozilla Foundation Security Advisory 2025-32: CVE-2025-4083
vendor_mozilla·CVSS 9.1
CVE-2025-4083 [CRITICAL] Mozilla Foundation Security Advisory 2025-32: CVE-2025-4083
Mozilla Foundation Security Advisory 2025-32
CVE: CVE-2025-4083
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 128.10
Mozilla
Mozilla Foundation Security Advisory 2025-29: CVE-2025-4083
vendor_mozilla·CVSS 9.1
CVE-2025-4083 [CRITICAL] Mozilla Foundation Security Advisory 2025-29: CVE-2025-4083
Mozilla Foundation Security Advisory 2025-29
CVE: CVE-2025-4083
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 128.10
Mozilla
Mozilla Foundation Security Advisory 2025-30: CVE-2025-4083
vendor_mozilla·CVSS 9.1
CVE-2025-4083 [CRITICAL] Mozilla Foundation Security Advisory 2025-30: CVE-2025-4083
Mozilla Foundation Security Advisory 2025-30
CVE: CVE-2025-4083
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.23
Mozilla
Mozilla Foundation Security Advisory 2025-28: CVE-2025-4083
vendor_mozilla·CVSS 9.1
CVE-2025-4083 [CRITICAL] Mozilla Foundation Security Advisory 2025-28: CVE-2025-4083
Mozilla Foundation Security Advisory 2025-28
CVE: CVE-2025-4083
Product: Firefox
Impact: high
Fixed in: Firefox 138
GHSA
GHSA-v4qx-h7r5-6qc8: A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level
ghsa_unreviewed·2025-04-29
CVE-2025-4083 [CRITICAL] CWE-653 GHSA-v4qx-h7r5-6qc8: A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level
A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10.
OSV
CVE-2025-4083: A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-l
osv·2025-04-29·CVSS 9.1
CVE-2025-4083 [CRITICAL] CVE-2025-4083: A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-l
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1958350https://www.mozilla.org/security/advisories/mfsa2025-28/https://www.mozilla.org/security/advisories/mfsa2025-29/https://www.mozilla.org/security/advisories/mfsa2025-30/https://www.mozilla.org/security/advisories/mfsa2025-31/https://www.mozilla.org/security/advisories/mfsa2025-32/https://lists.debian.org/debian-lts-announce/2025/05/msg00024.html
2025-04-29
Published