Mozilla Thunderbird up to 136 Web Contents file descriptor consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Mozilla Thunderbird up to 136. The affected element is an unknown function of the component Web Contents Handler. Executing a manipulation can lead to file descriptor consumption. The identification of this vulnerability is CVE-2025-3032. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 136. It has been declared as critical. This vulnerability affects an unknown part of the component Web Contents Handler. The manipulation with an unknown input leads to a file descriptor consumption vulnerability. The CWE definition for the vulnerability is CWE-769. This entry has been deprecated because it was a duplicate of CWE-774. All content has been transferred to CWE-774. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability was named CVE-2025-3032 since 03/31/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/15/2026).

The vulnerability scanner Nessus provides a plugin with the ID 233649 (Mozilla Thunderbird < 137.0), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 137 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (233649). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

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

ADP CISA Base Score: 7.4
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: File descriptor consumption
CWE: CWE-769 / CWE-400 / CWE-404
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: 233649
Nessus Name: Mozilla Thunderbird < 137.0

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 137

Timelineinfo

03/31/2025 🔍
04/01/2025 +1 days 🔍
04/01/2025 +0 days 🔍
04/15/2026 +379 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-3032 (🔍)
GCVE (CVE): GCVE-0-2025-3032
GCVE (VulDB): GCVE-100-302704

Entryinfo

Created: 04/01/2025 19:46
Updated: 04/15/2026 14:26
Changes: 04/01/2025 19:46 (55), 04/01/2025 20:01 (2), 04/15/2026 14:26 (13)
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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