THREATPORT/VULNERABILITY/CVE-2018-12390
CRITICAL SEVERITY

CVE-2018-12390

Firefox vulnerability

CVSS
9.8
EPSS
3.2%
EPSS pct
87th
Exploited
No known
Mozilla developers and community members reported memory safety bugs present in Firefox 62 and Firefox ESR 60.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.
Affected vendor
Mozilla
Affected product
Firefox
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2019-02-28

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2018-12390

  • Confirm whether Mozilla Firefox is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-12390.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-12390

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-12390 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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