CVE-2021-38509Not scoredCWE-1021

CVE-2021-38509: Mozilla Firefox vulnerability

Mozilla · Firefox

Vendor fix available · Affected: Mozilla Firefox · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.8%probability of exploitation in the next 30 days

78th percentile

050100

Higher than 78% of scored CVEs

Not scored yet. The CVE record carries no CVSS score.

DescriptionCVE.org

Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Affected products3

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Mozilla · Firefoxbefore 94
Mozilla · Thunderbirdbefore 91.3
Mozilla · Firefox ESRbefore 91.3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Restriction of Rendered UI Layers or Frames · Misconfiguration and Insecure Design
Vendor: Mozilla
Published: December 2021
Band: Possible (1 to 10%), December 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-38509 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.