CVE-2018-5103

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.03% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.5% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-06-11 21:00Z8 YR AGO

Last updated

2024-08-05 05:26Z2 YR AGO

Reserved

2018-01-03

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

37bf7d5d0e2764a1aa3a39e9f69b263737f64be9cdafcd842acb399182e1e3fb

• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-03/x_refsource_CONFIRM
• www.securitytracker.com1040270http://www.securitytracker.com/id/1040270vdb-entryx_refsource_SECTRACK
• lists.debian.org[debian-lts-announce] 20180129 [SECURITY] [DLA 1262-1] thunderbird security updatehttps://lists.debian.org/debian-lts-announce/2018/01/msg00036.htmlmailing-listx_refsource_MLIST
• www.securityfocus.com102783http://www.securityfocus.com/bid/102783vdb-entryx_refsource_BID
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1423159x_refsource_CONFIRM
• www.debian.orgDSA-4096https://www.debian.org/security/2018/dsa-4096vendor-advisoryx_refsource_DEBIAN
• access.redhat.comRHSA-2018:0262https://access.redhat.com/errata/RHSA-2018:0262vendor-advisoryx_refsource_REDHAT
• usn.ubuntu.comUSN-3544-1https://usn.ubuntu.com/3544-1/vendor-advisoryx_refsource_UBUNTU
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-04/x_refsource_CONFIRM
• access.redhat.comRHSA-2018:0122https://access.redhat.com/errata/RHSA-2018:0122vendor-advisoryx_refsource_REDHAT
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-02/x_refsource_CONFIRM
• lists.debian.org[debian-lts-announce] 20180124 [SECURITY] [DLA 1256-1] firefox-esr security updatehttps://lists.debian.org/debian-lts-announce/2018/01/msg00030.htmlmailing-listx_refsource_MLIST
• www.debian.orgDSA-4102https://www.debian.org/security/2018/dsa-4102vendor-advisoryx_refsource_DEBIAN