CVE-2021-1860

Q: How do I fix CVE-2021-1860?

Published advisories record a fix for 5 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2021-1860 being actively exploited?

Not that we know of. CVE-2021-1860 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 72% of all scored CVEs.

Q: How severe is CVE-2021-1860?

CVE-2021-1860 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-1860 affect?

Published advisories record a fix for ipados (NVD), iphone os (NVD), macos (NVD), tvos (NVD), and 1 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUMEPSS 72th pctl

6.5

CVSS v3

NVD

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. A malicious application may be able to disclose kernel memory.

CWE-665

How to fix

Remediation Available

ipadosNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1860derived from NVD

iphone osNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1860derived from NVD

macosNVD

Affected:>= 11.0, < 11.3Fixed in:11.3CVE-2021-1860derived from NVD

tvosNVD

Affected:< 14.5Fixed in:14.5CVE-2021-1860derived from NVD

watchosNVD

Affected:< 7.4Fixed in:7.4CVE-2021-1860derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.52%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Vendor Advisory6

Related Vulnerabilities

Other CWE-665 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-0847	High	7.8	89%	KEV	Fix
CVE-2022-22719	High	7.5	70%	-	Fix
CVE-2020-28019	High	7.5	62%	-	Fix
CVE-2022-46164	Critical	9.4	49%	-	Fix
CVE-2022-37128	Critical	9.8	21%	-	-
CVE-2019-14271	Critical	9.8	19%	-	Fix

Common questions

How do I fix CVE-2021-1860?

Published advisories record a fix for 5 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2021-1860 being actively exploited?

Not that we know of. CVE-2021-1860 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 72% of all scored CVEs.

How severe is CVE-2021-1860?

CVE-2021-1860 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-1860 affect?

Published advisories record a fix for ipados (NVD), iphone os (NVD), macos (NVD), tvos (NVD), and 1 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-1860

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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.