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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 2 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 0 Partial 2 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 2 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 0 SQL injection 0

Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 2 No user interaction 0

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Weakness (CWE) CWE-787 Out-of-bounds Write 2 CWE-416 Use After Free 1

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Release: Mozilla Firefox ESR 78.12 × Clear all filters

TI-2021-10587 CVE-2021-29970 · GHSA-822v-pgr4-6w5g

Use after free in Mozilla Thunderbird

Priority MEDIUM 41

A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash.

CVSS 3.1HIGH 8.8· Network · No auth · User interaction · EPSS 0.01428 · Published 2021-08-05 · Partial fix · 78.12, 90 CWE-416

TI-2021-10593 CVE-2021-29976 · GHSA-jv3x-w8ff-cj2g

Out-of-bounds write in Mozilla Thunderbird

Priority MEDIUM 41

Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird.

CVSS 3.1HIGH 8.8· Network · No auth · User interaction · EPSS 0.01223 · Published 2021-08-05 · Partial fix · 78.12, 90 CWE-787

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