Is CVE-2021-1836 in the CISA KEV catalog?

No. CVE-2021-1836 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1836?

CVE-2021-1836 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-1836?

CVE-2021-1836 has an EPSS score of 0.28% (20th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1836?

Upgrade ipados to 14.5 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-1836

MEDIUM

5.5

CVSS v3

NVD

Description

A logic issue was addressed with improved restrictions. This issue is fixed in iOS 14.5 and iPadOS 14.5, tvOS 14.5. A local user may be able to create or modify privileged files.

CWE-269Improper Privilege Management

How to fix

Remediation Available

ipadosNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1836derived from NVD

iphone osNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1836derived from NVD

tvosNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1836derived 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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	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.