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CVE-2018-5150

29
FAUCET Score

CVE-2018-5150 describes memory safety bugs in Firefox, Firefox ESR, and Thunderbird versions prior to 60 and 52.8 respectively. These flaws, categorized as CWE-119, could lead to memory corruption and potentially arbitrary code execution. With a critical CVSS score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), this vulnerability poses a significant risk due to its network-based attack vector and low attack complexity, allowing for complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, nor is public exploit code available, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

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
3.18%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0318 is in the 78th 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-0:52.8.0-1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:52.8.0-2.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:52.8.0-1.el7_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:52.8.0-1.el7_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-5150Critical

Mozilla: Memory safety bugs fixed in Firefox 60 and Firefox ESR 52.8

May 9, 2018

References

access.redhat.com / errata/RHSA-2018:1414
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1415
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1725
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1726
Third Party Advisory
bugzilla.mozilla.org / buglist.cgi
Issue TrackingPermissions RequiredThird Party Advisory
lists.debian.org / debian-lts-announce/2018/05/msg00007.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/05/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 / 3645-1
Third Party Advisory
usn.ubuntu.com / 3660-1
Third Party Advisory
usn.ubuntu.com / 3688-1
Third Party Advisory
debian.org / security/2018/dsa-4199
Third Party Advisory
debian.org / security/2018/dsa-4209
Third Party Advisory
mozilla.org / security/advisories/mfsa2018-11
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-12
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-13
Vendor Advisory
securityfocus.com / bid/104136
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040896
Third Party AdvisoryVDB Entry