Is CVE-2021-30796 in the CISA KEV catalog?

No. CVE-2021-30796 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30796?

CVE-2021-30796 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-30796?

CVE-2021-30796 has an EPSS score of 1.61% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30796?

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

CVE & CISA-KEV Catalog

CVE-2021-30796

MEDIUMEPSS 73th pctl

6.5

CVSS v3

NVD

Description

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing a maliciously crafted image may lead to a denial of service.

How to fix

Remediation Available

iphone osNVD

Affected:< 14.7Fixed in:14.7CVE-2021-30796derived from NVD

macosNVD

Affected:>= 11.0, < 11.5Fixed in:11.5CVE-2021-30796derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.61%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% 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.