Is CVE-2020-12415 in the CISA KEV catalog?

No. CVE-2020-12415 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-12415?

CVE-2020-12415 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-12415?

CVE-2020-12415 has an EPSS score of 1.27% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-12415?

Upgrade firefox on debian unstable to 78.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2020-12415

MEDIUM

6.5

CVSS v3

NVD

Description

When "%2F" was present in a manifest URL, Firefox's AppCache behavior may have become confused and allowed a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory. This vulnerability affects Firefox < 78.

CWE-276

How to fix

Remediation Available

firefoxDebian

Fixed in:78.0-1CVE-2020-12415

firefoxUbuntu

Fixed in:78.0.1+build1-0ubuntu0.16.04.1USN-4408-1

Fixed in:78.0.1+build1-0ubuntu0.18.04.1USN-4408-1

Fixed in:78.0.1+build1-0ubuntu0.20.04.1USN-4408-1

DeveloperEditionWindows application

Affected:78.0Fixed in:78.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:78.0Fixed in:78.0Mozilla

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

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

1.27%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory3

Related Vulnerabilities

Other CWE-276 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-0632	Critical	9.8	94%	KEV	-
CVE-2017-11610	High	8.8	88%	-	Fix
CVE-2023-29919	Critical	9.1	60%	-	-
CVE-2019-17124	Critical	9.8	23%	-	-
CVE-2020-12608	High	7.8	22%	-	Fix
CVE-2021-3437	Critical	9.8	16%	-	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.