
CVE catalog
CVE-2025-4084
firefox-esr: CVE-2025-4084
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.44% · Oct 25, 2026
Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. *This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox ESR 128.10, Firefox ESR 115.23, and Thunderbird 128.10.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | firefox-esr | sid | 153.5.1esr-1 | not affected |
| Debian | firefox-esr | forky | 153.5.1esr-1 | not affected |
| Debian | firefox-esr | trixie | 140.15.0esr-1~deb13u1 | not affected |
| Debian | firefox-esr | trixie-security | 153.5.1esr-1~deb13u1 | not affected |
| Debian | firefox-esr | bookworm | 140.12.0esr-1~deb12u1 | not affected |
| Debian | firefox-esr | bookworm-security | 153.5.1esr-1~deb12u1 | not affected |
| Debian | thunderbird | sid | 1:153.5.1esr-1 | not affected |
| Debian | thunderbird | forky | 1:153.5.0esr-1 | not affected |
| Debian | thunderbird | trixie | 1:140.12.0esr-1~deb13u1 | not affected |
| Debian | thunderbird | trixie-security | 1:153.5.1esr-1~deb13u2 | not affected |
| Debian | thunderbird | bookworm | 1:140.12.0esr-1~deb12u1 | not affected |
| Debian | thunderbird | bookworm-security | 1:153.5.1esr-1~deb12u1 | not affected |
| Cpe | firefox | Not reported | 128.10 | fixed |
| Cpe | thunderbird | Not reported | 128.10.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | firefox-esr | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | firefox-esr | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | thunderbird | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Cpe | firefox | cpe | Not reported | 128.10 | Not reported | NVD-CVE-2025-4084 | Not reported |
| Cpe | thunderbird | cpe | Not reported | 128.10.0 | Not reported | NVD-CVE-2025-4084 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [firefox-esr]Not affected
Details (4)
140.12.0esr-1~deb12u1· amd64 · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· arm64 · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· amd64 · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· arm64 · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-ach]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-af]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-all]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-an]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-ar]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-ast]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-az]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-be]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-bg]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-bn]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-br]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-bs]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-ca]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-cak]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-ca-valencia]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-cs]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-cy]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-da]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
- [firefox-esr-l10n-de]Not affected
Source package: [firefox-esr]
Details (4)
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.12.0esr-1~deb12u1· all · bookwormNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
140.14.0esr-1~deb12u1· all · bookworm-securityNot affected
dsa · firefox-esr · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_1436-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2025-4084]
- [https://security-tracker.debian.org/tracker/CVE-2025-4084]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-4084.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0901.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]