Is CVE-2020-15654 in the CISA KEV catalog?

No. CVE-2020-15654 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-15654?

CVE-2020-15654 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-15654?

CVE-2020-15654 has an EPSS score of 1.24% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-15654?

Upgrade firefox on debian unstable to 79.0-1 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2020-15654

MEDIUM

6.5

CVSS v3

NVD

Description

When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CWE-835

How to fix

Remediation Available

firefoxDebian

Fixed in:79.0-1CVE-2020-15654

firefoxUbuntu

Fixed in:79.0+build1-0ubuntu0.16.04.2USN-4443-1

Fixed in:79.0+build1-0ubuntu0.18.04.1USN-4443-1

Fixed in:79.0+build1-0ubuntu0.20.04.1USN-4443-1

DeveloperEditionWindows application

Affected:79.0Fixed in:79.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:79.0Fixed in:79.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:78.1Fixed in:78.1Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:78.1Fixed in:78.1Mozilla

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

1.24%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory4

Third-Party Advisory2

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13935	High	7.5	88%	-	Fix
CVE-2020-36227	High	7.5	78%	-	Fix
CVE-2022-0778	High	7.5	71%	-	Fix
CVE-2019-14241	High	7.5	70%	-	-
CVE-2017-16944	High	7.5	63%	-	Fix
CVE-2024-20353	High	8.6	63%	KEV	-

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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.