7.7

CVE-2025-3033: mozilla firefox External Control of File Name or Path

CVSS: 7.7v3.1HighModified
AliasesCGA-5p44-j9g7-4mx9CGA-gxqx-pj87-9cwjCGA-329w-vp58-r64q
Published 01-04-2025Last modified 13-04-2026
Open JSON

Vulnerability summary

CVE-2025-3033 is a high (CVSS 7.7) External Control of File Name or Path vulnerability in mozilla firefox. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · 0.00 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-QC49-H8WH-G9JRUBUNTU-CVE-2025-3033

Timeline

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

Description

After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

0.00 pp

From 0.17% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.17%

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

Chainguard2 products
  • firefox< 137-r0
  • firefox-esrAll versions (No fix recorded)
Mozilla2 products
Wolfi1 product
  • firefox< 137-r0

3 vendors · 5 products

References

3 links