Is CVE-2019-9815 in the CISA KEV catalog?

No. CVE-2019-9815 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9815?

CVE-2019-9815 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2019-9815?

CVE-2019-9815 has an EPSS score of 1.83% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9815?

Upgrade DeveloperEdition to 67.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2019-9815

HIGHEPSS 76th pctl

8.1

CVSS v3

NVD

Description

If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. *Note: users need to update to macOS 10.14.5 in order to take advantage of this change.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

CWE-203

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:67.0Fixed in:67.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:67.0Fixed in:67.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:60.7Fixed in:60.7Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:60.7Fixed in:60.7Mozilla

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.83%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Vendor Advisory3

Third-Party Advisory2

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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.