CVE-2020-35112: mozilla firefox
Vulnerability summary
CVE-2020-35112 is a high (CVSS 8.8) vulnerability in mozilla firefox. EPSS estimates a 1.27% chance of exploitation in the next 30 days, higher than 69.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 13 · Related 13Timeline
- 07-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
If a user downloaded a file lacking an extension on Windows, and then "Open"-ed it from the downloads panel, if there was an executable file in the downloads directory with the same name but with an executable extension (such as .bat or .exe) that executable would have been launched instead. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.27%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
+0.01 pp
From 1.26% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu4 products
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- mozjs78All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 84 | < 84.0
- firefox_esr≥ unspecified, < 78.6 | < 78.6.0
- thunderbird≥ unspecified, < 78.6 | < 78.6.0
2 vendors · 7 products