Mozilla Firefox vulnerabilities

3,197 known vulnerabilities affecting mozilla/firefox.

Total CVEs
3,197
CISA KEV
17
actively exploited
Public exploits
122
Exploited in wild
22
Severity breakdown
CRITICAL865HIGH944MEDIUM1312LOW71UNKNOWN5

Vulnerabilities

Page 155 of 160
CVE-2026-6784HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6784 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6784 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6784 Product: Firefox Impact: high Fixed in: Firefox 150
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CVE-2022-24713HIGHCVSS 7.5
CVE-2022-24713 [HIGH] Mozilla Foundation Security Advisory 2022-15: CVE-2022-24713 Mozilla Foundation Security Advisory 2022-15 CVE: CVE-2022-24713 Product: Thunderbird Impact: high Fixed in: Thunderbird 91.8
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CVE-2026-6781HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6781 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6781 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6781 Product: Firefox Impact: high Fixed in: Firefox 150
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CVE-2022-38476HIGHCVSS 7.5
CVE-2022-38476 [HIGH] Mozilla Foundation Security Advisory 2022-34: CVE-2022-38476 Mozilla Foundation Security Advisory 2022-34 CVE: CVE-2022-38476 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 102.2
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CVE-2021-38495HIGHCVSS 8.8
CVE-2021-38495 [HIGH] Mozilla Foundation Security Advisory 2021-40: CVE-2021-38495 Mozilla Foundation Security Advisory 2021-40 CVE: CVE-2021-38495 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 91.1
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CVE-2023-3417HIGHCVSS 7.5
CVE-2023-3417 [HIGH] Mozilla Foundation Security Advisory 2023-27: CVE-2023-3417 Mozilla Foundation Security Advisory 2023-27 CVE: CVE-2023-3417 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 115.0.1
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CVE-2022-0566HIGHCVSS 8.8
CVE-2022-0566 [HIGH] Mozilla Foundation Security Advisory 2022-07: CVE-2022-0566 Mozilla Foundation Security Advisory 2022-07 CVE: CVE-2022-0566 Product: Thunderbird Impact: high Fixed in: Thunderbird 91.6.1
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CVE-2022-45414HIGHCVSS 8.1
CVE-2022-45414 [HIGH] Mozilla Foundation Security Advisory 2022-50: CVE-2022-45414 Mozilla Foundation Security Advisory 2022-50 CVE: CVE-2022-45414 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 102.5.1
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CVE-2026-6776HIGHCVSS 7.8fixed in Firefox 150
CVE-2026-6776 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6776 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6776 Product: Firefox Impact: high Fixed in: Firefox 150
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CVE-2022-3033HIGHCVSS 8.1
CVE-2022-3033 [HIGH] Mozilla Foundation Security Advisory 2022-50: CVE-2022-3033 Mozilla Foundation Security Advisory 2022-50 CVE: CVE-2022-3033 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 102.5.1
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CVE-2025-3875HIGHCVSS 7.5
CVE-2025-3875 [HIGH] Mozilla Foundation Security Advisory 2025-35: CVE-2025-3875 Mozilla Foundation Security Advisory 2025-35 CVE: CVE-2025-3875 Product: Thunderbird Impact: low Fixed in: Thunderbird 138.0.1
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CVE-2020-26970HIGHCVSS 8.8
CVE-2020-26970 [HIGH] Mozilla Foundation Security Advisory 2020-53: CVE-2020-26970 Mozilla Foundation Security Advisory 2020-53 CVE: CVE-2020-26970 Product: Thunderbird Impact: high Fixed in: Thunderbird 78.5.1
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CVE-2025-2783HIGHCVSS 8.3KEVPoC
CVE-2025-2783 [HIGH] Mozilla Foundation Security Advisory 2025-19: CVE-2025-2783 Mozilla Foundation Security Advisory 2025-19 CVE: CVE-2025-2783 Product: Firefox, Firefox ESR Impact: critical Fixed in: Firefox 136.0.4 Firefox ESR 115.21.1 Firefox ESR 128.8.1
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CVE-2020-12398HIGHCVSS 7.5
CVE-2020-12398 [HIGH] Mozilla Foundation Security Advisory 2020-22: CVE-2020-12398 Mozilla Foundation Security Advisory 2020-22 CVE: CVE-2020-12398 Product: Thunderbird Impact: high Fixed in: Thunderbird 68.9
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CVE-2021-29950HIGHCVSS 7.5
CVE-2021-29950 [HIGH] Mozilla Foundation Security Advisory 2021-17: CVE-2021-29950 Mozilla Foundation Security Advisory 2021-17 CVE: CVE-2021-29950 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 78.8.1
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CVE-2024-49040HIGHCVSS 7.5
CVE-2024-49040 [HIGH] Mozilla Foundation Security Advisory 2025-11: CVE-2024-49040 Mozilla Foundation Security Advisory 2025-11 CVE: CVE-2024-49040 Product: Thunderbird Impact: high Fixed in: Thunderbird 135
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CVE-2024-1563HIGHCVSS 8.1
CVE-2024-1563 [HIGH] Mozilla Foundation Security Advisory 2024-09: CVE-2024-1563 Mozilla Foundation Security Advisory 2024-09 CVE: CVE-2024-1563 Product: Focus for iOS Impact: high Fixed in: Focus for iOS 122
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CVE-2026-4371HIGHCVSS 7.4
CVE-2026-4371 [HIGH] Mozilla Foundation Security Advisory 2026-23: CVE-2026-4371 Mozilla Foundation Security Advisory 2026-23 CVE: CVE-2026-4371 Product: Thunderbird Impact: high Fixed in: Thunderbird 149
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CVE-2020-15679HIGHCVSS 7.6
CVE-2020-15679 [HIGH] Mozilla Foundation Security Advisory 2020-48: CVE-2020-15679 Mozilla Foundation Security Advisory 2020-48 CVE: CVE-2020-15679 Product: Mozilla VPN 1.0.7 (929), Mozilla VPN 1.1.0 (1360), Mozilla VPN 1.2.2 Impact: moderate Fixed in: Mozilla VPN 1.0.7 (929) (iOS) Mozilla VPN 1.1.0 (1360) (Android) Mozilla VPN 1.2.2 (Windows)
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CVE-2026-6772HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6772 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6772 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6772 Product: Firefox Impact: high Fixed in: Firefox 150
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