7.4

CVE-2025-3032: mozilla firefox File Descriptor Leak

CVSS: 7.4v3.1HighModified
AliasesUBUNTU-CVE-2025-3032CGA-pv99-4p52-f335CGA-wh3v-xqvr-xh44
Published 01-04-2025Last modified 13-04-2026
Open JSON

Vulnerability summary

CVE-2025-3032 is a high (CVSS 7.4) File Descriptor Leak vulnerability in mozilla firefox. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 32.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.39%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 4
OPENSUSE-SU-2025:14971-1OPENSUSE-SU-2026:11373-1CGA-4FC4-V8G8-4H8FUSN-7991-1

Timeline

  1. 01-04-2025
    PublishedVulnerability first disclosed.
  2. 13-04-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

+0.01 pp

From 0.39% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu8 products
  • mozjs102All versions (No fix recorded)
  • mozjs115All versions (No fix recorded)
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Chainguard2 products
  • firefox< 137-r0
  • firefox-esr< 140.5.0-r0 | < 140.4.0-r0
Mozilla2 products
Wolfi1 product
  • firefox< 137-r0

4 vendors · 13 products

References

7 links