Is CVE-2024-8394 in the CISA KEV catalog?

No. CVE-2024-8394 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-8394?

CVE-2024-8394 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2024-8394?

CVE-2024-8394 has an EPSS score of 0.31% (23th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-8394?

Upgrade thunderbird on debian 13 to 1:128.2.0esr-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2024-8394

MEDIUM

6.5

CVSS v3

NVD

Description

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

CWE-416Use After Free

How to fix

Remediation Available

thunderbirdDebian

Fixed in:1:128.2.0esr-1CVE-2024-8394

thunderbirdRed Hat / RHEL

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

thunderbirdRocky

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

thunderbird-debuginfoRocky

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

thunderbird-debugsourceRocky

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:128.2.0-1.el8_8RHSA-2024:6719

Fixed in:0:128.2.0-1.el8_6RHSA-2024:6816

Fixed in:0:128.2.0-1.el8_2RHSA-2024:6723

Fixed in:0:128.2.0-1.el8_4RHSA-2024:6721

Fixed in:0:128.2.0-1.el8_10RHSA-2024:6684

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Fixed in:0:128.2.0-1.el9_0RHSA-2024:6722

Fixed in:0:128.2.0-1.el9_2RHSA-2024:6720

Fixed in:0:128.2.0-1.el9_4RHSA-2024:6683

Mozilla Thunderbird (en-US)Windows application

Affected:128.2.0Fixed in:128.2.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.31%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-03-19.