Known vulnerabilities in Mozilla Thunderbird

Vendor: Mozilla
Software CPE: cpe:2.3:a:mozilla:mozilla_thunderbird:*:*:*:*:*:*:*:*
Total vulnerabilities: 1276
Public exploits: 34
Known exploited (KEV): 12
Highest CVSSv4 Score: 9.3

Breakdown by Severity Chart

Severity distribution of vulnerabilities affecting Mozilla Thunderbird Mozilla Thunderbird is affected by 1276 known vulnerabilities: 10 critical, 565 high, 369 medium, 332 low Critical High Medium Low

Vulnerabilities (1276)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU144097 - Improper Access Control
CVE-2026-75874
CWE-284 High
No
No
154.0 18.08.2026 SB2026081838
SB2026081989
SB2026082141
and 10 more
#VU144099 - Improper Access Control
CVE-2026-74952
CWE-284 Low
No
No
154.0 18.08.2026 SB2026081838
SB2026081989
SB2026082141
and 3 more
#VU144102 - Memory corruption
CVE-2026-74989
CWE-119 Medium
No
No
154.0 18.08.2026 SB2026081838
SB2026081989
SB2026082141
and 1 more
#VU144076 - Use After Free
CVE-2026-74937
CWE-416 High
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144077 - Protection Mechanism Failure
CVE-2026-74938
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144078 - Access of Uninitialized Pointer
CVE-2026-74947
CWE-824 High
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144079 - Improper Access Control
CVE-2026-74950
CWE-284 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144084 - Observable discrepancy
CVE-2026-74961
CWE-203 Low
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144085 - Exposure of sensitive information to an unauthorized actor
CVE-2026-74966
CWE-200 Low
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144086 - Protection Mechanism Failure
CVE-2026-74968
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144087 - Protection Mechanism Failure
CVE-2026-74970
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144088 - Integer overflow
CVE-2026-74977
CWE-190 Low
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144089 - Improper Restriction of Rendered UI Layers or Frames
CVE-2026-74978
CWE-1021 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144090 - Protection Mechanism Failure
CVE-2026-74979
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144091 - Protection Mechanism Failure
CVE-2026-74981
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144092 - Improper input validation
CVE-2026-74982
CWE-20 Low
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144093 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2026-74984
CWE-362 Low
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144094 - Improper Access Control
CVE-2026-74985
CWE-284 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144095 - Protection Mechanism Failure
CVE-2026-74986
CWE-693 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more
#VU144096 - Memory corruption
CVE-2026-74988
CWE-119 Medium
No
No
153.1.0, 154.0 18.08.2026 SB2026081838
SB2026081988
SB2026081989
and 4 more


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