5.4

CVE-2009-1839: mozilla firefox

Modified
Published 12-06-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-1839 is a medium (CVSS 5.4) vulnerability in mozilla firefox. EPSS estimates a 7.12% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 18-12-2009)

Source freshness unavailable

How is this decided?
CVSS score
5.4/10
010
Medium · v2.0 (NVD)
EPSS score
7.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 2

Timeline

  1. 12-06-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Mozilla Firefox 3 before 3.0.11 associates an incorrect principal with a file: URL loaded through the location bar, which allows user-assisted remote attackers to bypass intended access restrictions and read files via a crafted HTML document, aka a "file-URL-to-file-URL scripting" attack.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

7.12%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.12% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • exploit-databaselocalmultipleVerified

    Mozilla Firefox - Location Bar Spoofing

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Mozilla1 product
  • firefox≤ 3.0.10 | 3.0 | 3.0:alpha | 3.0:beta2 | 3.0:beta5 | 3.0.1 | 3.0.2 | 3.0.3 | 3.0.4 | 3.0.5 | 3.0.6 | 3.0.7 | 3.0.8 | 3.0.9 | 3.0beta5 | 3.1:beta1

1 vendor · 1 product

References

18 links
Show all 18 references