Mozilla Thunderbird up to 91.4 Remote Code Execution

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Mozilla Thunderbird up to 91.4. This impacts an unknown function. This manipulation causes an unknown weakness. This vulnerability is registered as CVE-2022-22748. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Mozilla Thunderbird up to 91.4 (Mail Client Software). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 01/11/2022 by Alesandro Ortiz as Bug 1705211 as confirmed advisory (Website). The advisory is shared at bugzilla.mozilla.org. The advisory contains:

Malicious websites could have confused Firefox into showing the wrong origin when asking to launch a program and handling an external URL protocol.

This vulnerability is known as CVE-2022-22748. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/28/2026).

Upgrading to version 91.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-27891). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Mail Client Software

Vendor

• Mozilla

Name

• Thunderbird

Version

• 91.0
• 91.1
• 91.2
• 91.3
• 91.4

License

• open-source

Website

• Vendor: https://www.mozilla.org/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Thunderbird 91.5

Timelineinfo

01/07/2022 🔍
01/11/2022 +4 days 🔍
01/11/2022 +0 days 🔍
09/29/2022 +261 days 🔍
04/28/2026 +1307 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1705211
Researcher: Alesandro Ortiz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22748 (🔍)
GCVE (CVE): GCVE-0-2022-22748
GCVE (VulDB): GCVE-100-209845
EUVD: 🔍

Entryinfo

Created: 09/29/2022 15:40
Updated: 04/28/2026 13:15
Changes: 09/29/2022 15:40 (13), 09/29/2022 15:41 (4), 09/29/2022 15:44 (27), 10/25/2022 17:18 (1), 04/28/2026 13:15 (15)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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