Is CVE-2019-11729 in the CISA KEV catalog?

No. CVE-2019-11729 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-11729?

CVE-2019-11729 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-11729?

CVE-2019-11729 has an EPSS score of 2.79% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-11729?

Upgrade firefox on debian unstable to 68.0-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2019-11729

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

Empty or malformed p256-ECDH public keys may trigger a segmentation fault due values being improperly sanitized before being copied into memory and used. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:68.0-1CVE-2019-11729

firefoxUbuntu

Fixed in:68.0+build3-0ubuntu0.16.04.1USN-4054-1

Fixed in:68.0+build3-0ubuntu0.18.04.1USN-4054-1

libnss3Ubuntu

Fixed in:2:3.28.4-0ubuntu0.14.04.5+esm1USN-4060-2

Fixed in:2:3.28.4-0ubuntu0.16.04.6USN-4060-1

Fixed in:2:3.35-2ubuntu2.3USN-4060-1

nssUbuntu

Fixed in:2:3.28.4-0ubuntu0.14.04.5+esm1USN-4060-2

Fixed in:2:3.28.4-0ubuntu0.16.04.6USN-4060-1

Fixed in:2:3.35-2ubuntu2.3USN-4060-1

thunderbirdUbuntu

Fixed in:1:60.8.0+build1-0ubuntu0.16.04.2USN-4064-1

Fixed in:1:60.8.0+build1-0ubuntu0.18.04.1USN-4064-1

DeveloperEditionWindows application

Affected:68.0Fixed in:68.0Mozilla

Affected:60.8.0Fixed in:60.8.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:60.8.0Fixed in:60.8.0Mozilla

Affected:68.0Fixed in:68.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:60.8.0Fixed in:60.8.0Mozilla

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.79%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Vendor Advisory4

Other references10

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2025-11-25.