SARA / Free Tools / CVE / CVE-2021-1782

CVE-2021-1782 — Apple Multiple Products Race Condition Vulnerability

A race condition was addressed with improved locking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to elevate privileges. Apple

CVSS
— —
EPSS
5.88% (top 9.50%)
CWE
—
Published
2021-04-02T17:59:21.000Z
Last modified
2025-10-21T23:25:50.291Z
CVSS vector
—
CISA KEV — Actively Exploited
Added to KEV
2021-11-03
BOD 22-01 due
2021-11-17
Ransomware use
Unknown
View KEV detail
CVE-2021-1782 on CISA KEV →

01What is this vulnerability?

A race condition was addressed with improved locking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited..

02Affected products

VendorProductVersions
AppleiOS and iPadOSunspecified
ApplemacOSunspecified
ApplemacOSunspecified
ApplemacOSunspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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