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CVE-2020-6800

29
FAUCET Score

CVE-2020-6800 addresses multiple memory safety bugs in Mozilla Firefox, Firefox ESR, and Thunderbird, specifically affecting versions prior to Firefox 73, Firefox ESR 68.5, and Thunderbird 68.5. These flaws, if exploited, could lead to arbitrary code execution due to memory corruption. The vulnerability has a CVSS score of 8.8 (HIGH), indicating a network-based attack requiring user interaction with high impact on confidentiality, integrity, and availability. While the EPSS score is low, suggesting a low probability of exploitation, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 73.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 68.5.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
< 68.5.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.27%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0227 is in the 80th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: thunderbird-0:68.5.0-1.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:68.5.0-2.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:68.5.0-1.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:68.5.0-2.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:68.5.0-1.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: firefox-0:68.5.0-2.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: thunderbird-0:68.5.0-1.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: firefox-0:68.5.0-2.el8_0
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-6800Important

Mozilla: Memory safety bugs fixed in Firefox 73 and Firefox ESR 68.5

Feb 11, 2020

References

bugzilla.mozilla.org / buglist.cgi
Broken LinkIssue Tracking
security.gentoo.org / glsa/202003-02
Third Party Advisory
security.gentoo.org / glsa/202003-10
Third Party Advisory
usn.ubuntu.com / 4278-2
Third Party Advisory
usn.ubuntu.com / 4328-1
Third Party Advisory
usn.ubuntu.com / 4335-1
Third Party Advisory
mozilla.org / security/advisories/mfsa2020-05
Vendor Advisory
mozilla.org / security/advisories/mfsa2020-06
Vendor Advisory
mozilla.org / security/advisories/mfsa2020-07
Vendor Advisory