CVE-2025-3032
Leaking file descriptors from the fork server
No known exploitation. EPSS puts it in the 30th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 30th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 450 days, from the signal feeds we watch.
- OpenVAS check added
- Patch availablerecord updated
- Publishedweakness classified
Affected products
- Suse Linux Enterprise DesktopOperating Systems / linux-distro
- SUSE Linux Enterprise Server for SAP ApplicationsOperating Systems / linux-distro
- OpenSUSE LeapOperating Systems / linux-distro
- SUSE OpenStack CloudOperating Systems / linux-distro
- SUSE Linux Enterprise Point of SaleOperating Systems / linux-distro
- SUSE OpenStack Cloud CrowbarOperating Systems / linux-distro
- SUSE Enterprise StorageOperating Systems / linux-distro
- HPE Helion OpenstackOperating Systems / linux-distro
And 16 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Scored 7.4 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability NoneNo availability impact
Weaknesses
Sources
References in the record
- bugzilla.mozilla.org/show_bug.cgi?id=1949987
- mozilla.org/security/advisories/mfsa2025-20/
- mozilla.org/security/advisories/mfsa2025-23/
And 11 more references. See all after sign-in
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