CVE-2020-6806

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.60% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 85.0% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-03-25 21:14Z6 YR AGO

Last updated

2024-08-04 09:11Z2 YR AGO

Reserved

2020-01-10

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

71bc47ad0f396edaee1c233f967366d225b7854073fed18e13974c6bef7cb5fc

• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-08/x_refsource_MISC
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-10/x_refsource_MISC
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-09/x_refsource_MISC
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1612308x_refsource_MISC
• usn.ubuntu.comUSN-4328-1https://usn.ubuntu.com/4328-1/vendor-advisoryx_refsource_UBUNTU
• usn.ubuntu.comUSN-4335-1https://usn.ubuntu.com/4335-1/vendor-advisoryx_refsource_UBUNTU
• packetstormsecurity.comhttp://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.htmlx_refsource_MISC