Is CVE-2021-30786 in the CISA KEV catalog?

No. CVE-2021-30786 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30786?

CVE-2021-30786 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2021-30786?

CVE-2021-30786 has an EPSS score of 0.79% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30786?

Upgrade iphone os to 14.7 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30786

HIGH

7.0

CVSS v3

NVD

Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

CWE-362Race Condition

How to fix

Remediation Available

iphone osNVD

Affected:< 14.7Fixed in:14.7CVE-2021-30786derived from NVD

macosNVD

Affected:>= 11.0, < 11.5Fixed in:11.5CVE-2021-30786derived 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

0.79%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

Embed a live status badge for CVE-2021-30786

Markdown

[![CVE-2021-30786](https://tridentstack.com/cve/badge/CVE-2021-30786.svg)](https://tridentstack.com/cve/CVE-2021-30786)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-30786"><img src="https://tridentstack.com/cve/badge/CVE-2021-30786.svg" alt="CVE-2021-30786"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.