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CVE-2018-5089

28
FAUCET Score

CVE-2018-5089 describes memory safety bugs in Firefox 57, Firefox ESR 52.5, and Thunderbird versions prior to 52.6, which could lead to memory corruption. These issues were assessed as potentially exploitable for arbitrary code execution. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity, requiring no user interaction, and could result in complete compromise of confidentiality, integrity, and availability. Despite its high 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
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:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*

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
3.34%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0334 is in the 79th 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-0:52.6.0-1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:52.6.0-1.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:52.6.0-1.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:52.6.0-1.el7_4
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-5089Critical

Mozilla: Memory safety bugs fixed in Firefox 58 and Firefox ESR 52.6 (MFSA 2018-03)

Jan 23, 2018

References

access.redhat.com / errata/RHSA-2018:0122
Third Party Advisory
access.redhat.com / errata/RHSA-2018:0262
Third Party Advisory
bugzilla.mozilla.org / buglist.cgi
Issue Tracking
lists.debian.org / debian-lts-announce/2018/01/msg00030.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/01/msg00036.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3544-1
Third Party Advisory
usn.ubuntu.com / 3688-1
Third Party Advisory
debian.org / security/2018/dsa-4096
Third Party Advisory
debian.org / security/2018/dsa-4102
Third Party Advisory
mozilla.org / security/advisories/mfsa2018-02
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-03
Vendor Advisory
mozilla.org / security/advisories/mfsa2018-04
Vendor Advisory
securityfocus.com / bid/102783
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040270
Third Party AdvisoryVDB Entry