Known vulnerabilities in Firefox ESR 128.12.0

Vendor: Mozilla
Software: Firefox ESR
Version: 128.12.0
Software CPE: cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Total vulnerabilities: 204
Public exploits: 2
Known exploited (KEV): 0
Highest CVSSv4 Score: 9.3

Vulnerabilities by Severity

Severity distribution of vulnerabilities affecting Firefox ESR version 128.12.0 Firefox ESR 128.12.0 is affected by 204 vulnerabilities: 128 high, 58 medium, 18 low Critical High Medium Low

Vulnerabilities (204)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU146610 - Memory corruption
CVE-2026-84145
CWE-119 High
No
No
115.40.0, 140.15.0, 153.2.0 01.09.2026 SB2026090144
SB2026090308
SB2026091360
and 2 more
#VU146609 - NULL Pointer Dereference
CVE-2026-84131
CWE-476 High
No
No
115.40.0, 140.15.0, 153.2.0 01.09.2026 SB2026090144
SB2026090308
SB2026091360
and 2 more
#VU146608 - Use After Free
CVE-2026-84121
CWE-416 High
No
No
115.40.0, 140.15.0, 153.2.0 01.09.2026 SB2026090144
SB2026090308
SB2026091360
and 2 more
#VU146606 - Use After Free
CVE-2026-84119
CWE-416 High
No
No
115.40.0, 140.15.0, 153.2.0 01.09.2026 SB2026090144
SB2026090308
SB2026091360
and 2 more
#VU146607 - Use After Free
CVE-2026-84120
CWE-416 High
No
No
115.40.0, 140.15.0, 153.2.0 01.09.2026 SB2026090144
SB2026090308
SB2026091360
and 2 more
#VU144097 - Improper Access Control
CVE-2026-75874
CWE-284 High
No
No
115.40.0, 140.15.0, 153.2.0 18.08.2026 SB2026081838
SB2026081989
SB2026082141
and 5 more
#VU144057 - Memory corruption
CVE-2026-74990
CWE-119 Medium
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144054 - Use After Free
CVE-2026-74969
CWE-416 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 22 more
#VU144055 - Use After Free
CVE-2026-74973
CWE-416 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144056 - Improper Access Control
CVE-2026-74974
CWE-284 Medium
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144051 - Exposure of sensitive information to an unauthorized actor
CVE-2026-74945
CWE-200 Medium
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144052 - Memory corruption
CVE-2026-74946
CWE-119 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 28 more
#VU144053 - Exposure of sensitive information to an unauthorized actor
CVE-2026-74948
CWE-200 Medium
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 28 more
#VU144048 - Use After Free
CVE-2026-74940
CWE-416 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 28 more
#VU144049 - Improper Access Control
CVE-2026-74942
CWE-284 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144050 - Use After Free
CVE-2026-74943
CWE-416 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 24 more
#VU144045 - Improper Access Control
CVE-2026-74934
CWE-284 Medium
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144046 - Improper Access Control
CVE-2026-74935
CWE-284 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU144047 - Improper Access Control
CVE-2026-74939
CWE-284 High
No
No
115.39.0, 140.14.0, 153.1.0 18.08.2026 SB2026081838
SB2026081987
SB2026081988
and 30 more
#VU138964 - Improper Access Control
CVE-2026-16349
CWE-284 Medium
No
No
115.38.0, 140.13.0 21.07.2026 SB2026072201
SB2026072301
SB2026072302
and 18 more


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