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CVE-2018-5188

31
FAUCET Score

CVE-2018-5188 identifies multiple memory safety bugs in Firefox 60, Firefox ESR 60, and Firefox ESR 52.8, also impacting Thunderbird. These flaws, categorized as CWE-119, could lead to memory corruption and potentially arbitrary code execution. With a CVSS score of 9.8 (Critical), it represents a high-impact vulnerability with a network attack vector, low attack complexity, and no user interaction required, allowing for full confidentiality, integrity, and availability compromise. Despite its critical severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
3.94%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0394 is in the 82nd percentile among its peer group of 36,897 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 (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:60.1.0-5.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:52.9.1-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:60.1.0-4.el7_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:52.9.1-1.el7_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-5188Critical

Mozilla: Memory safety bugs fixed in Firefox 61, Firefox ESR 60.1, and Firefox ESR 52.9

Jun 26, 2018

References

access.redhat.com / errata/RHSA-2018:2112
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2113
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2251
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2252
Third Party Advisory
bugzilla.mozilla.org / buglist.cgi
Issue TrackingVendor Advisory
lists.debian.org / debian-lts-announce/2018/06/msg00014.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/07/msg00013.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201810-01
Third Party Advisory
security.gentoo.org / glsa/201811-13
Third Party Advisory
usn.ubuntu.com / 3705-1
Third Party Advisory
usn.ubuntu.com / 3714-1
Third Party Advisory
usn.ubuntu.com / 3749-1
Third Party Advisory
debian.org / security/2018/dsa-4244
Third Party Advisory
mozilla.org / security/advisories/mfsa2018-15
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-16
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-17
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-18
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-19
Vendor Advisory
securityfocus.com / bid/104555
Third Party AdvisoryVDB Entry