CVE-2020-6820
high · 8.1Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
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Added 2021-11-03Remediation due 2022-05-03
Under 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.
8.1
CVSS
7.1%
EPSS (exploit prob.)
94th
EPSS percentile
2020-04-24
Published
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-362
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 68.6.1 |
| mozilla | firefox | < 74.0.1 |
| mozilla | thunderbird | < 68.7.0 |
Check a specific version with /api/v1/cve/match.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1626728
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-11/
- https://www.mozilla.org/security/advisories/mfsa2020-14/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1626728
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-11/
- https://www.mozilla.org/security/advisories/mfsa2020-14/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-6820
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2020-6820