CVE-2024-8394

MEDIUMNVD 6.56.5—

6.5

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.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 22.8%
KEV: Not listed

Published

September 6, 2024

Last Modified

March 19, 2025

References (2)

security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1895737
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2024-43/

Patch Availability(8)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	thunderbird-0:128.2.0-1.el8_6	2024-09-19	redhat
redhat	thunderbird-0:128.2.0-1.el8_2	2024-09-17	redhat
redhat	thunderbird-0:128.2.0-1.el8_4	2024-09-17	redhat
redhat	thunderbird-0:128.2.0-1.el9_0	2024-09-17	redhat
redhat	thunderbird-0:128.2.0-1.el8_8	2024-09-17	redhat
redhat	thunderbird-0:128.2.0-1.el9_2	2024-09-17	redhat
redhat	thunderbird-0:128.2.0-1.el8_10	2024-09-16	redhat
redhat	thunderbird-0:128.2.0-1.el9_4	2024-09-16	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 58× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-23 21:32 UTCEPSS rescore
2026-06-23 21:32 UTCEPSS rescore
2026-06-22 14:25 UTCEPSS rescore
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2026-06-21 14:56 UTCEPSS rescore
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2026-06-21 01:59 UTCEPSS rescore
2026-06-19 19:25 UTCEPSS rescore
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2026-06-15 17:48 UTCEPSS rescore
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2026-06-14 23:17 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
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2026-06-11 13:59 UTCEPSS rescore
2026-06-10 22:18 UTCEPSS rescore
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2026-06-10 13:21 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore

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2026-06-08 14:16 UTCEPSS rescore
2026-06-07 21:50 UTCOSV refresh
2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
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2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-23 11:22 UTCEG score recompute
2026-05-23 11:22 UTCVendor advisory
2026-05-23 11:22 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2024-8394?

CVE-2024-8394 is a medium vulnerability published on September 6, 2024. 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.

When was CVE-2024-8394 disclosed?

CVE-2024-8394 was first published in the National Vulnerability Database on September 6, 2024, with the most recent update on March 19, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-8394 actively exploited?

CVE-2024-8394 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

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

How do I remediate CVE-2024-8394?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-8394, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2024-8394

Published

Last Modified

References (2)

Patch Availability(8)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-8394?

Same vendor

Same CWE

CVE-2024-8394

📅 Published

🔄 Last Modified

🔗 References (2)

Patch Availability(8)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-8394?

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Frequently asked(5)

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