Mozilla Thunderbird up to 144 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Mozilla Thunderbird up to 144. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to memory corruption. This vulnerability is handled as CVE-2025-13027. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 144. It has been declared as critical. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Memory safety bugs present in Firefox 144 and Thunderbird 144. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 145 and Thunderbird < 145.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability was named CVE-2025-13027 since 11/11/2025. 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 $5k-$25k (estimation calculated on 01/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 275016 (Linux Distros Unpatched Vulnerability : CVE-2025-13027), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 145 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (275016), EUVD (EUVD-2025-84322) and CERT Bund (WID-SEC-2025-2566). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • IGEL OS
  • Mozilla Firefox ESR
  • Mozilla Firefox
  • Mozilla Thunderbird

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
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Nessus ID: 275016
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-13027

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Thunderbird 145

Timelineinfo

11/11/2025 Advisory disclosed
11/11/2025 +0 days CVE reserved
11/11/2025 +0 days VulDB entry created
01/07/2026 +57 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-13027 (🔒)
GCVE (CVE): GCVE-0-2025-13027
GCVE (VulDB): GCVE-100-331936
EUVD: 🔒
CERT Bund: WID-SEC-2025-2566 - Mozilla Firefox und Firefox ESR: Mehrere Schwachstellen

Entryinfo

Created: 11/11/2025 19:03
Updated: 01/07/2026 05:08
Changes: 11/11/2025 19:03 (55), 11/12/2025 15:09 (2), 11/12/2025 17:28 (7), 11/13/2025 08:26 (1), 11/16/2025 10:19 (1), 11/18/2025 04:02 (1), 11/20/2025 07:00 (1), 11/22/2025 01:26 (1), 01/07/2026 05:08 (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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