Is CVE-2019-11741 in the CISA KEV catalog?

No. CVE-2019-11741 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-11741?

CVE-2019-11741 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2019-11741?

CVE-2019-11741 has an EPSS score of 0.59% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-11741?

Upgrade firefox on debian unstable to 69.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2019-11741

MEDIUM

6.1

CVSS v3

NVD

Description

A compromised sandboxed content process can perform a Universal Cross-site Scripting (UXSS) attack on content from any site it can cause to be loaded in the same process. Because addons.mozilla.org and accounts.firefox.com have close ties to the Firefox product, malicious manipulation of these sites within the browser can potentially be used to modify a user's Firefox configuration. These two sites will now be isolated into their own process and not allowed to be loaded in a standard content process. This vulnerability affects Firefox < 69.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

firefoxDebian

Fixed in:69.0-1CVE-2019-11741

firefoxUbuntu

Fixed in:69.0+build2-0ubuntu0.16.04.4USN-4122-1

Fixed in:69.0+build2-0ubuntu0.18.04.1USN-4122-1

DeveloperEditionWindows application

Affected:69.0Fixed in:69.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:69.0Fixed in:69.0Mozilla

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

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.59%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	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.