CVE-2020-6820 - Mozilla Firefox and Thunderbird
AI Vulnerability ContextUnder certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Overview
A source-backed snapshot of this vulnerability.
CISA KEVyesWhether CISA lists this as exploited.
Techniques0AI attack methods connected to this vulnerability.
Case studies0Examples where this vulnerability is mentioned.
Vulnerability status
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CISA KEVHIGH
- CVE ID
- CVE-2020-6820
- Vendor/project
- Mozilla
- Product
- Firefox and Thunderbird
- Vulnerability name
- Mozilla Firefox And Thunderbird Use-After-Free Vulnerability
- Date added
- 2021-11-03
- Due date
- 2022-05-03
- Known ransomware campaign use
- Unknown
- CVSS v3
- 8.1
CWE-362
Exploit context
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No description available. The source record only contains identifiers and metadata.
Source evidence
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Original source
Original source links
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NVD CVE pagehttps://nvd.nist.gov/vuln/detail/CVE-2020-6820CVE API docshttps://nvd.nist.gov/developers/vulnerabilitiesData feedshttps://nvd.nist.gov/vuln/data-feedsCataloghttps://www.cisa.gov/known-exploited-vulnerabilities-catalogData repositoryhttps://github.com/cisagov/kev-dataaf854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1626728af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4335-1/af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-11/af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-14/134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-6820