CVE-2018-18497

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

1.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.0% of scored records. A rank, not a probability.

NVD base score

6.5 (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:N/A:N

NVD analysis status

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

Red Hat severity

Moderate. 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

2019-02-28 18:00Z7 YR AGO

Last updated

2024-08-05 11:08Z2 YR AGO

Reserved

2018-10-19

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-939Improper Authorization in Handler for Custom URL SchemeBase

Data version

5.1

Document digest

c2e3c3ac080468df7b3bfd7355f11e6555470ea1fa8245ce52214d4ca6489bc7

• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1488180x_refsource_CONFIRM
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2018-29/x_refsource_CONFIRM
• usn.ubuntu.comUSN-3844-1https://usn.ubuntu.com/3844-1/vendor-advisoryx_refsource_UBUNTU
• www.securityfocus.com106167http://www.securityfocus.com/bid/106167vdb-entryx_refsource_BID