Known vulnerabilities in Firefox ESR

Vendor: Mozilla
Software: Firefox ESR
Software CPE: cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Total vulnerabilities: 1137
Public exploits: 31
Known exploited (KEV): 13
Highest CVSSv4 Score: 9.3

Breakdown by Severity Chart

Severity distribution of vulnerabilities affecting Firefox ESR Firefox ESR is affected by 1137 known vulnerabilities: 11 critical, 556 high, 337 medium, 233 low Critical High Medium Low

Vulnerabilities (1137)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU150051 - Use After Free
CVE-2026-92027
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150052 - Use After Free
CVE-2026-92028
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150047 - Use After Free
CVE-2026-92022
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150048 - Use After Free
CVE-2026-92023
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150049 - Use After Free
CVE-2026-92024
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150050 - Use After Free
CVE-2026-92025
CWE-416 Medium
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150044 - Protection Mechanism Failure
CVE-2026-92018
CWE-693 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150045 - Protection Mechanism Failure
CVE-2026-92019
CWE-693 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150046 - Improper input validation
CVE-2026-92020
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150040 - Improper input validation
CVE-2026-92013
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150041 - Improper input validation
CVE-2026-92014
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150042 - Improper Privilege Management
CVE-2026-92015
CWE-269 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150043 - Improper Privilege Management
CVE-2026-92017
CWE-269 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150037 - Improper input validation
CVE-2026-92010
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150038 - Improper input validation
CVE-2026-92011
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150039 - Improper input validation
CVE-2026-92012
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150034 - Improper input validation
CVE-2026-92007
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150035 - Improper input validation
CVE-2026-92008
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150036 - Improper input validation
CVE-2026-92009
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225
#VU150033 - Improper input validation
CVE-2026-92006
CWE-20 High
No
No
115.41.0, 140.16.0, 153.3.0 15.09.2026 SB2026091579
SB20260917225


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