Is CVE-2021-30773 in the CISA KEV catalog?

No. CVE-2021-30773 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30773?

CVE-2021-30773 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-30773?

CVE-2021-30773 has an EPSS score of 1.14% (63th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30773?

Upgrade iphone os to 14.7 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30773

MEDIUM

5.5

CVSS v3

NVD

Description

An issue in code signature validation was addressed with improved checks. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. A malicious application may be able to bypass code signing checks.

How to fix

Remediation Available

iphone osNVD

Affected:< 14.7Fixed in:14.7CVE-2021-30773derived from NVD

tvosNVD

Affected:< 14.7Fixed in:14.7CVE-2021-30773derived from NVD

watchosNVD

Affected:< 7.6Fixed in:7.6CVE-2021-30773derived 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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.14%probability of exploitation in 30 days

63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Vendor Advisory3

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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.