Mozilla Thunderbird up to 102.7 ~ScriptLoadContext use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Thunderbird up to 102.7. Affected by this issue is the function ~ScriptLoadContext. The manipulation results in use after free. This vulnerability is identified as CVE-2023-25739. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Thunderbird up to 102.7 (Mail Client Software). Affected is the function ~ScriptLoadContext. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

The weakness was released 06/03/2023. The advisory is shared for download at mozilla.org. This vulnerability is traded as CVE-2023-25739 since 02/13/2023. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/01/2025).

The vulnerability scanner Nessus provides a plugin with the ID 245197 (Linux Distros Unpatched Vulnerability : CVE-2023-25739), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 102.8 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the databases at Tenable (245197) and EUVD (EUVD-2023-29646). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 245197
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-25739

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 102.8

Timelineinfo

02/13/2023 🔍
06/03/2023 +109 days 🔍
06/03/2023 +0 days 🔍
11/01/2025 +882 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2023-25739 (🔍)
GCVE (CVE): GCVE-0-2023-25739
GCVE (VulDB): GCVE-100-230616
EUVD: 🔍

Entryinfo

Created: 06/03/2023 07:42
Updated: 11/01/2025 23:38
Changes: 06/03/2023 07:42 (41), 06/29/2023 18:17 (11), 01/09/2025 23:00 (26), 04/26/2025 00:41 (3), 08/07/2025 23:19 (2), 11/01/2025 23:38 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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