9.1

CVE-2025-54145: mozilla firefox Open Redirect

CVSS: 9.1v3.1CriticalModified
AliasesUBUNTU-CVE-2025-54145CGA-2x5j-5cgr-hg8pCGA-wxhg-pm69-wv3x
Published 19-08-2025Last modified 13-04-2026
Open JSON

Vulnerability summary

CVE-2025-54145 is a critical (CVSS 9.1) Open Redirect 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
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.39%
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 0 · Related 1
CGA-5H8G-C8M5-8J78

Timeline

  1. 19-08-2025
    PublishedVulnerability first disclosed.
  2. 13-04-2026
    Last modifiedVulnerability information updated.

Description

The QR scanner could allow arbitrary websites to be opened if a user was tricked into scanning a malicious link that leveraged Firefox's open-text URL scheme. This vulnerability was fixed in Firefox for iOS 141.

CVSS metrics

2 scores · 2 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

0.00 pp

From 0.39% on 20-09-2026

20-09-202620-10-2026
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)
Chainguard1 product
  • firefox< 141-r0
Mozilla1 product
Wolfi1 product
  • firefox< 141-r0

4 vendors · 11 products

References

4 links