CVE-2018-5127

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

7.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 94.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.1

Document digest

08a90c297593543d64e69c7884075f9ce511f0bda2fb43800abd12175b7bcaae

• www.debian.orgDSA-4139https://www.debian.org/security/2018/dsa-4139vendor-advisoryx_refsource_DEBIAN
• security.gentoo.orgGLSA-201810-01https://security.gentoo.org/glsa/201810-01vendor-advisoryx_refsource_GENTOO
• www.securityfocus.com103388http://www.securityfocus.com/bid/103388vdb-entryx_refsource_BID
• security.gentoo.orgGLSA-201811-13https://security.gentoo.org/glsa/201811-13vendor-advisoryx_refsource_GENTOO
• access.redhat.comRHSA-2018:0527https://access.redhat.com/errata/RHSA-2018:0527vendor-advisoryx_refsource_REDHAT
• usn.ubuntu.comUSN-3545-1https://usn.ubuntu.com/3545-1/vendor-advisoryx_refsource_UBUNTU
• lists.debian.org[debian-lts-announce] 20180315 [SECURITY] [DLA 1308-1] firefox-esr security updatehttps://lists.debian.org/debian-lts-announce/2018/03/msg00010.htmlmailing-listx_refsource_MLIST
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-09/x_refsource_CONFIRM
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-07/x_refsource_CONFIRM
• access.redhat.comRHSA-2018:0526https://access.redhat.com/errata/RHSA-2018:0526vendor-advisoryx_refsource_REDHAT
• lists.debian.org[debian-lts-announce] 20180329 [SECURITY] [DLA 1327-1] thunderbird security updatehttps://lists.debian.org/debian-lts-announce/2018/03/msg00029.htmlmailing-listx_refsource_MLIST
• www.debian.orgDSA-4155https://www.debian.org/security/2018/dsa-4155vendor-advisoryx_refsource_DEBIAN
• access.redhat.comRHSA-2018:0648https://access.redhat.com/errata/RHSA-2018:0648vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2018:0647https://access.redhat.com/errata/RHSA-2018:0647vendor-advisoryx_refsource_REDHAT
• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1430557x_refsource_CONFIRM
• www.securitytracker.com1040514http://www.securitytracker.com/id/1040514vdb-entryx_refsource_SECTRACK
• usn.ubuntu.comUSN-3596-1https://usn.ubuntu.com/3596-1/vendor-advisoryx_refsource_UBUNTU
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-06/x_refsource_CONFIRM