Is CVE-2020-9839 in the CISA KEV catalog?

No. CVE-2020-9839 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-9839?

CVE-2020-9839 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2020-9839?

CVE-2020-9839 has an EPSS score of 3.67% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-9839?

Upgrade ipados to 13.5 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2020-9839

HIGHEPSS 88th pctl

7.0

CVSS v3

NVD

Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. An application may be able to gain elevated privileges.

CWE-362Race Condition

How to fix

Remediation Available

ipadosNVD

Affected:< 13.5Fixed in:13.5CVE-2020-9839derived from NVD

iphone osNVD

Affected:< 13.5Fixed in:13.5CVE-2020-9839derived from NVD

mac os xNVD

Affected:< 10.15.5Fixed in:10.15.5CVE-2020-9839derived from NVD

tvosNVD

Affected:< 13.4.5Fixed in:13.4.5CVE-2020-9839derived from NVD

watchosNVD

Affected:< 6.2.5Fixed in:6.2.5CVE-2020-9839derived from NVD

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.67%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Vendor Advisory4

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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.