Security Vulnerabilities
Malicious calendar invitations could use file URI attachments to launch local or network-hosted executables on Windows, bypassing Thunderbird's normal executable attachment protections. With the new invitation display enabled, the attachment could also appear under a misleading filename. This vulnerability was fixed in Thunderbird 154 and Thunderbird 153.2.
CVSS Score
9.8
EPSS Score
0.003
Published
2026-09-01
Triggering an error condition in certain MIME bodies would cause uninitialized memory to be used. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
CVSS Score
9.1
EPSS Score
0.003
Published
2026-09-01
A maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-01
A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-01
CVE-2026-83548
A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path. A remote unauthenticated attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive functionality and perform unauthorized operations.
Known exploited
CVSS Score
10.0
EPSS Score
0.007
Published
2026-09-01
CVE-2026-83549
Post-authentication Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) which in specific conditions could potentially enable a remote authenticated attacker as administrator to execute arbitrary OS commands, resulting in remote code execution.
Known exploited
CVSS Score
7.8
EPSS Score
0.016
Published
2026-09-01
A format string vulnerability exists in the command line interface of AOS-CX that could lead to unauthenticated remote code execution. Successful exploitation of this vulnerability results in the ability to execute arbitrary code as a privileged user on the underlying operating system.
CVSS Score
8.8
EPSS Score
0.003
Published
2026-09-01
Stack overflow vulnerabilities exist in an API endpoint of AOS-CX. Successful exploitation could allow an authenticated malicious actor to cause a denial-of-service condition on the affected system.
CVSS Score
4.9
EPSS Score
0.003
Published
2026-09-01
An unauthenticated Denial-of-Service (DoS) vulnerability exists in the API endpoint of AOS-CX. Successful exploitation of this vulnerability results in the ability to interrupt the normal operation of the affected service.
CVSS Score
7.5
EPSS Score
0.003
Published
2026-09-01
A buffer overflow vulnerability exists in the underlying operating system of AOS-CX that could lead to unauthenticated disclosure of sensitive information by sending specially crafted packets to the affected system. Successful exploitation of this vulnerability could result in limited disclosure or modification of information and disruption of the affected system.
CVSS Score
7.6
EPSS Score
0.002
Published
2026-09-01