How severe is CVE-2024-9397?

CVE-2024-9397 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-9397 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-9397?

CVE-2024-9397 primarily affects Mozilla Firefox. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-9397?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-9397 have an EU (EUVD) identifier?

Yes. CVE-2024-9397 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49912.

When was CVE-2024-9397 published?

CVE-2024-9397 was published on 2024-10-01 and last updated on 2026-06-17.

CVE-2024-9397

CVE-2024-9397 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1021.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49912
Weakness: CWE-1021
Affected product: Mozilla Firefox
Published: 2024-10-01
Last modified: 2026-06-17

Description

A missing delay in directory upload UI could have made it possible for an attacker to trick a user into granting permission via clickjacking. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Frequently asked questions

What is CVE-2024-9397?: A missing delay in directory upload UI could have made it possible for an attacker to trick a user into granting permission via clickjacking. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.
How severe is CVE-2024-9397?: CVE-2024-9397 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-9397 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-9397?: CVE-2024-9397 primarily affects Mozilla Firefox. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-9397?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-9397 have an EU (EUVD) identifier?: Yes. CVE-2024-9397 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49912.
When was CVE-2024-9397 published?: CVE-2024-9397 was published on 2024-10-01 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:129.0:beta6:*:*:*:*:*:*

More vulnerabilities in Mozilla Firefox

CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4692 — Critical (CVSS 10.0): Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR…
CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…

All CVEs affecting Mozilla Firefox →

Other CWE-1021 vulnerabilities

CVE-2021-43048 — Critical (CVSS 9.8): The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain a vulnerability…
CVE-2021-23274 — Critical (CVSS 9.8): The Config UI component of TIBCO Software Inc.'s TIBCO API Exchange Gateway and TIBCO API Exchange Gateway Distribution…
CVE-2016-2496 — Critical (CVSS 9.8): The Framework UI permission-dialog implementation in Android 6.x before 2016-06-01 allows attackers to conduct…
CVE-2021-21132 — Critical (CVSS 9.6): Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to…
CVE-2021-21111 — Critical (CVSS 9.6): Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a…
CVE-2024-10004 — Critical (CVSS 9.1): Opening an external link to an HTTP website when Firefox iOS was previously closed and had an HTTPS tab open could in…

Browse all CWE-1021 vulnerabilities →