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CVE-2019-11709

31
FAUCET Score

CVE-2019-11709 is a critical memory safety vulnerability affecting Mozilla Firefox, Firefox ESR, and Thunderbird versions prior to 68 and 60.8 respectively. It involves memory corruption bugs that could potentially be exploited to achieve arbitrary code execution. With a CVSS score of 9.8, this vulnerability is easily exploitable over a network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are available, and it is not on the CISA KEV catalog, its high severity warrants immediate patching. There is also minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 60.8.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 68.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 60.8.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.35%
Probability of exploitation in next 30 days
EPSS Percentile
81.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0235 is in the 72nd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:60.8.0-1.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:60.8.0-1.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:60.8.0-1.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: thunderbird-0:60.8.0-1.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:60.8.0-1.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: firefox-0:60.8.0-1.el8_0
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2019-11709Critical

Mozilla: Memory safety bugs fixed in Firefox 68 and Firefox ESR 60.8

Jul 10, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-07/msg00055.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-07/msg00058.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-08/msg00073.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-10/msg00009.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-10/msg00010.html
Mailing ListThird Party Advisory
bugzilla.mozilla.org / buglist.cgi
Issue TrackingVendor Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00001.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00002.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201908-12
Third Party Advisory
security.gentoo.org / glsa/201908-20
Third Party Advisory
mozilla.org / security/advisories/mfsa2019-21
Vendor Advisory
mozilla.org / security/advisories/mfsa2019-22
Vendor Advisory
mozilla.org / security/advisories/mfsa2019-23
Vendor Advisory