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 156 of 160
CVE-2025-5687HIGHCVSS 7.8
CVE-2025-5687 [HIGH] Mozilla Foundation Security Advisory 2025-48: CVE-2025-5687 Mozilla Foundation Security Advisory 2025-48 CVE: CVE-2025-5687 Product: Mozilla VPN 2.28.0 Impact: high Fixed in: Mozilla VPN 2.28.0 (macOS)
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CVE-2023-5129HIGHCVSS 8.8Exploited
CVE-2023-5129 [HIGH] Mozilla Foundation Security Advisory 2023-40: CVE-2023-5129 Mozilla Foundation Security Advisory 2023-40 CVE: CVE-2023-5129 Product: Firefox, Firefox ESR, Thunderbird Impact: critical Fixed in: Firefox 117.0.1 Firefox ESR 102.15.1 Firefox ESR 115.2.1 Thunderbird 102.15.1 Thunderbird 115.2.2
mozilla
CVE-2022-36059HIGHCVSS 8.2
CVE-2022-36059 [HIGH] Mozilla Foundation Security Advisory 2022-38: CVE-2022-36059 Mozilla Foundation Security Advisory 2022-38 CVE: CVE-2022-36059 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 102.2.1
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CVE-2026-6759HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6759 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6759 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6759 Product: Firefox Impact: high Fixed in: Firefox 150
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CVE-2026-6786HIGHCVSS 8.1fixed in Firefox 150
CVE-2026-6786 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6786 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6786 Product: Firefox Impact: high Fixed in: Firefox 150
mozilla
CVE-2022-0517HIGHCVSS 7.8
CVE-2022-0517 [HIGH] Mozilla Foundation Security Advisory 2022-08: CVE-2022-0517 Mozilla Foundation Security Advisory 2022-08 CVE: CVE-2022-0517 Product: Mozilla VPN Impact: high Fixed in: Mozilla VPN 2.7.1
mozilla
CVE-2021-29949HIGHCVSS 7.8
CVE-2021-29949 [HIGH] Mozilla Foundation Security Advisory 2021-13: CVE-2021-29949 Mozilla Foundation Security Advisory 2021-13 CVE: CVE-2021-29949 Product: Thunderbird Impact: low Fixed in: Thunderbird 78.9.1
mozilla
CVE-2020-15685HIGHCVSS 8.8
CVE-2020-15685 [HIGH] Mozilla Foundation Security Advisory 2021-05: CVE-2020-15685 Mozilla Foundation Security Advisory 2021-05 CVE: CVE-2020-15685 Product: Thunderbird Impact: high Fixed in: Thunderbird 78.7
mozilla
CVE-2026-6782HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6782 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6782 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6782 Product: Firefox Impact: high Fixed in: Firefox 150
mozilla
CVE-2026-6780HIGHCVSS 7.5fixed in Firefox 150
CVE-2026-6780 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6780 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6780 Product: Firefox Impact: high Fixed in: Firefox 150
mozilla
CVE-2024-0605HIGHCVSS 7.5
CVE-2024-0605 [HIGH] Mozilla Foundation Security Advisory 2024-03: CVE-2024-0605 Mozilla Foundation Security Advisory 2024-03 CVE: CVE-2024-0605 Product: Focus for iOS Impact: high Fixed in: Focus for iOS 122
mozilla
CVE-2020-6828HIGHCVSS 7.5
CVE-2020-6828 [HIGH] Mozilla Foundation Security Advisory 2020-13: CVE-2020-6828 Mozilla Foundation Security Advisory 2020-13 CVE: CVE-2020-6828 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 68.7
mozilla
CVE-2026-6785HIGHCVSS 8.1fixed in Firefox 150
CVE-2026-6785 [HIGH] Mozilla Foundation Security Advisory 2026-30: CVE-2026-6785 Mozilla Foundation Security Advisory 2026-30 CVE: CVE-2026-6785 Product: Firefox Impact: high Fixed in: Firefox 150
mozilla
CVE-2024-1936HIGHCVSS 7.5
CVE-2024-1936 [HIGH] Mozilla Foundation Security Advisory 2024-11: CVE-2024-1936 Mozilla Foundation Security Advisory 2024-11 CVE: CVE-2024-1936 Product: Thunderbird Impact: high Fixed in: Thunderbird 115.8.1
mozilla
CVE-2022-39250HIGHCVSS 8.6
CVE-2022-39250 [HIGH] Mozilla Foundation Security Advisory 2022-43: CVE-2022-39250 Mozilla Foundation Security Advisory 2022-43 CVE: CVE-2022-39250 Product: Thunderbird Impact: moderate Fixed in: Thunderbird 102.3.1
mozilla
CVE-2022-40674HIGHCVSS 8.1
CVE-2022-40674 [HIGH] Mozilla Foundation Security Advisory 2022-47: CVE-2022-40674 Mozilla Foundation Security Advisory 2022-47 CVE: CVE-2022-40674 Product: Firefox Impact: high Fixed in: Firefox 107
mozilla
CVE-2024-9956HIGHCVSS 7.8
CVE-2024-9956 [HIGH] Mozilla Foundation Security Advisory 2025-14: CVE-2024-9956 Mozilla Foundation Security Advisory 2025-14 CVE: CVE-2024-9956 Product: Firefox Impact: high Fixed in: Firefox 136
mozilla
CVE-2021-29969MEDIUMCVSS 5.9
CVE-2021-29969 [MEDIUM] Mozilla Foundation Security Advisory 2021-30: CVE-2021-29969 Mozilla Foundation Security Advisory 2021-30 CVE: CVE-2021-29969 Product: Thunderbird Impact: high Fixed in: Thunderbird 78.12
mozilla
CVE-2020-6514MEDIUMCVSS 6.5
CVE-2020-6514 [MEDIUM] Mozilla Foundation Security Advisory 2020-31: CVE-2020-6514 Mozilla Foundation Security Advisory 2020-31 CVE: CVE-2020-6514 Product: Firefox ESR Impact: high Fixed in: Firefox ESR 68.11
mozilla
CVE-2025-55032MEDIUMCVSS 6.1
CVE-2025-55032 [MEDIUM] Mozilla Foundation Security Advisory 2025-69: CVE-2025-55032 Mozilla Foundation Security Advisory 2025-69 CVE: CVE-2025-55032 Product: Focus for iOS Impact: moderate Fixed in: Focus for iOS 142
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