6.1
CVSSv3

CVE-2020-26978

Published: 07/01/2021 Updated: 12/01/2021
CVSS v2 Base Score: 5.8 | Impact Score: 4.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 6.1 | Impact Score: 2.7 | Exploitability Score: 2.8
VMScore: 516
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Vulnerability Summary

Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Vulnerability Trend

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mozilla firefox esr

mozilla thunderbird

mozilla firefox

Vendor Advisories

Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, information disclosure or CSS sanitiser bypass For the stable distribution (buster), these problems have been fixed in version 7860esr-1~deb10u1 We recommend that you upgrade your firefox-esr packages ...
Multiple security issues have been found in Thunderbird, which may lead to the execution of arbitrary code, denial of service or information leak For the stable distribution (buster), these problems have been fixed in version 1:7860-1~deb10u1 We recommend that you upgrade your thunderbird packages For the detailed security status of thunderbir ...
Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) bas ...
Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 8Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) bas ...
Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 82 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability ...
Synopsis Important: firefox security update Type/Severity Security Advisory: Important Topic An update for firefox is now available for Red Hat Enterprise Linux 80 Update Services for SAP SolutionsRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerabili ...
Synopsis Important: firefox security update Type/Severity Security Advisory: Important Topic An update for firefox is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, ...
Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 81 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability ...
Synopsis Important: thunderbird security update Type/Severity Security Advisory: Important Topic An update for thunderbird is now available for Red Hat Enterprise Linux 80 Update Services for SAP SolutionsRed Hat Product Security has rated this update as having a security impact of Important A Common Vul ...
Synopsis Important: firefox security update Type/Severity Security Advisory: Important Topic An update for firefox is now available for Red Hat Enterprise Linux 81 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring ...
Synopsis Important: firefox security update Type/Severity Security Advisory: Important Topic An update for firefox is now available for Red Hat Enterprise Linux 82 Extended Update SupportRed Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring ...
Synopsis Important: firefox security update Type/Severity Security Advisory: Important Topic An update for firefox is now available for Red Hat Enterprise Linux 8Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, ...
When drawing a transparent image on top of an unknown cross-origin image, the Skia library `drawImage` function took a variable amount of time depending on the content of the underlying image This resulted in potential cross-origin information exposure of image content through timing side-channel attacks (CVE-2020-16012) The Mozilla Foundation Se ...
Severity Unknown Remote Unknown Type Unknown Description AVG-1362 firefox 830-2 840-1 High Fixed ...
Mozilla Foundation Security Advisory 2020-55 Security Vulnerabilities fixed in Firefox ESR 786 Announced December 15, 2020 Impact critical Products Firefox ESR Fixed in Firefox ESR 786 ...
Mozilla Foundation Security Advisory 2020-54 Security Vulnerabilities fixed in Firefox 84 Announced December 15, 2020 Impact critical Products Firefox Fixed in Firefox 84 ...
Mozilla Foundation Security Advisory 2020-56 Security Vulnerabilities fixed in Thunderbird 786 Announced December 15, 2020 Impact critical Products Thunderbird Fixed in Thunderbird 786 ...