Red Hat Enterprise Linux 9 update for thunderbird
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 8 |
| CVE-ID | CVE-2025-4918 CVE-2025-4920 CVE-2025-4919 CVE-2025-4921 CVE-2025-5267 CVE-2025-5264 CVE-2025-5268 CVE-2025-5266 CVE-2025-5263 CVE-2025-5269 |
| CWE-ID | CWE-787 CWE-357 CWE-20 CWE-119 CWE-200 CWE-388 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Red Hat Enterprise Linux Server - AUS Operating systems & Components / Operating system Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component thunderbird (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 8 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU109400
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-4918,CVE-2025-4920
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing JavaScript "Promise" object. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds write
EUVDB-ID: #VU109401
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-4919,CVE-2025-4921
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when manipulating a JavaScript object by confusing array index sizes. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Insufficient UI Warning of Dangerous Operations
EUVDB-ID: #VU109876
Risk: Low
CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2025-5267
CWE-ID:
CWE-357 - Insufficient UI Warning of Dangerous Operations
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform clickjacking attacks.
The vulnerability exists due to an error in the UI that can lead to information disclosure. A remote attacker can perform a clickjacking attack and trick a user into leaking saved payment card details to a malicious page.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Input validation error
EUVDB-ID: #VU109858
Risk: Medium
CVSSv4.0: 4.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-5264
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input within the "Copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL, trick the victim into using this command and execute arbitrary commands on the system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Buffer overflow
EUVDB-ID: #VU109877
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-5268
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Information disclosure
EUVDB-ID: #VU109875
Risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-5266
CWE-ID:
CWE-200 - Exposure of sensitive information to an unauthorized actor
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to script elements loading cross-origin resources generated load and error
events, which leaked information. A remote attacker can gain access to sensitive information.
Install updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Improper error handling
EUVDB-ID: #VU109857
Risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2025-5263
CWE-ID:
CWE-388 - Error Handling
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to error handling for script execution is not correctly isolated from the web content. A remote attacker can trick the victim into opening a specially crafted website and obtain certain information cross-origin.
Install updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
8) Buffer overflow
EUVDB-ID: #VU109878
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-5269
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server - AUS: 9.2
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 9.2
thunderbird (Red Hat package): before 128.11.0-1.el9_2
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_aus:9.2:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_enterprise_linux_server_for_ibm_power_le_-_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:thunderbird_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2025:8642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
