Is CVE-2016-1634 in the CISA KEV catalog?

No. CVE-2016-1634 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-1634?

CVE-2016-1634 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2016-1634?

CVE-2016-1634 has an EPSS score of 1.61% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-1634?

Upgrade liboxideqtcore0 on ubuntu 14.04 to 1.13.6-0ubuntu0.14.04.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-1634

HIGHEPSS 73th pctl

8.8

CVSS v3

NVD

Description

Use-after-free vulnerability in the StyleResolver::appendCSSStyleSheet function in WebKit/Source/core/css/resolver/StyleResolver.cpp in Blink, as used in Google Chrome before 49.0.2623.75, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted web site that triggers Cascading Style Sheets (CSS) style invalidation during a certain subtree-removal action.

How to fix

Remediation Available

liboxideqtcore0Ubuntu

Fixed in:1.13.6-0ubuntu0.14.04.1USN-2920-1

oxide-qtUbuntu

Fixed in:1.13.6-0ubuntu0.14.04.1USN-2920-1

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

1.61%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Other references12

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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 2026-05-06.