A race during concurrent delazification could have led to a use-after-free. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.
                
            Metrics
Affected Vendors & Products
References
        History
                    Mon, 03 Nov 2025 21:30:00 +0000
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Tue, 15 Jul 2025 13:45:00 +0000
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        epss
         
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        epss
         
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Thu, 13 Feb 2025 01:00:00 +0000
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| CPEs | cpe:/a:redhat:enterprise_linux:8 | 
Fri, 07 Feb 2025 14:30:00 +0000
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| Title | firefox: thunderbird: Use-after-free during concurrent delazification | |
| First Time appeared | 
        
        Redhat
         Redhat enterprise Linux Redhat rhel Aus Redhat rhel E4s Redhat rhel Els Redhat rhel Eus Redhat rhel Tus  | 
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| CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/a:redhat:rhel_aus:8.2 cpe:/a:redhat:rhel_aus:8.4 cpe:/a:redhat:rhel_aus:8.6 cpe:/a:redhat:rhel_e4s:8.4 cpe:/a:redhat:rhel_e4s:8.6 cpe:/a:redhat:rhel_e4s:9.0 cpe:/a:redhat:rhel_eus:8.8 cpe:/a:redhat:rhel_eus:9.2 cpe:/a:redhat:rhel_eus:9.4 cpe:/a:redhat:rhel_tus:8.4 cpe:/a:redhat:rhel_tus:8.6 cpe:/o:redhat:rhel_els:7  | 
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| Vendors & Products | 
        
        Redhat
         Redhat enterprise Linux Redhat rhel Aus Redhat rhel E4s Redhat rhel Els Redhat rhel Eus Redhat rhel Tus  | 
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        threat_severity
         
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        threat_severity
         
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Thu, 06 Feb 2025 20:00:00 +0000
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        Mozilla
         Mozilla firefox Mozilla thunderbird  | 
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| CPEs | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*  | 
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| Vendors & Products | 
        
        Mozilla
         Mozilla firefox Mozilla thunderbird  | 
Wed, 05 Feb 2025 16:15:00 +0000
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| Weaknesses | CWE-416 | |
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        cvssV3_1
         
 
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Tue, 04 Feb 2025 14:15:00 +0000
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| Description | A race during concurrent delazification could have led to a use-after-free. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135. | |
| References | 
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Status: PUBLISHED
Assigner: mozilla
Published: 2025-02-04T13:58:53.687Z
Updated: 2025-11-03T20:56:54.541Z
Reserved: 2025-02-04T07:26:31.830Z
Link: CVE-2025-1012
Updated: 2025-11-03T20:56:54.541Z
Status : Modified
Published: 2025-02-04T14:15:32.000
Modified: 2025-11-03T21:18:51.117
Link: CVE-2025-1012