Is CVE-2018-12391 in the CISA KEV catalog?

No. CVE-2018-12391 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-12391?

CVE-2018-12391 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2018-12391?

CVE-2018-12391 has an EPSS score of 2.09% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-12391?

Upgrade DeveloperEdition to 63.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-12391

HIGHEPSS 79th pctl

8.8

CVSS v3

NVD

Description

During HTTP Live Stream playback on Firefox for Android, audio data can be accessed across origins in violation of security policies. Because the problem is in the underlying Android service, this issue is addressed by treating all HLS streams as cross-origin and opaque to access. *Note: this issue only affects Firefox for Android. Desktop versions of Firefox are unaffected.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.

CWE-863Incorrect Authorization

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:63.0Fixed in:63.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:63.0Fixed in:63.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:60.3Fixed in:60.3Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:60.3Fixed in:60.3Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.09%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Vendor Advisory4

Third-Party Advisory4

Related Vulnerabilities

Other CWE-863 (Incorrect Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-22518	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-38035	Critical	9.8	100%	KEV + Ransom	-
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2025-29927	Critical	9.1	100%	-	Fix
CVE-2024-38856	Critical	9.8	99%	KEV	Fix
CVE-2020-36289	Medium	5.3	99%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.