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CVE-2018-12365

22
FAUCET Score

CVE-2018-12365 describes a medium-severity vulnerability affecting Mozilla Firefox, Firefox ESR, and Thunderbird. A compromised inter-process communication (IPC) child process could escape the content sandbox, allowing an attacker to list arbitrary file names on the filesystem without user interaction, potentially exposing private local files. The CVSS score is 6.5, indicating a network-based attack with low complexity, requiring user interaction, and resulting in high confidentiality impact. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
7.6CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.16%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0316 is in the 94th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-2018-12365Moderate

Mozilla: Compromised IPC child process can list local filenames

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 / show_bug.cgi
Issue TrackingPermissions RequiredVendor 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
debian.org / security/2018/dsa-4235
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/104560
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041193
Third Party AdvisoryVDB Entry