Is CVE-2021-30826 in the CISA KEV catalog?

No. CVE-2021-30826 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30826?

CVE-2021-30826 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-30826?

CVE-2021-30826 has an EPSS score of 1.21% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30826?

Upgrade ipados to 15.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30826

HIGH

7.5

CVSS v3

NVD

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. In certain situations, the baseband would fail to enable integrity and ciphering protection.

How to fix

Remediation Available

ipadosNVD

Affected:< 15.0Fixed in:15.0CVE-2021-30826derived from NVD

iphone osNVD

Affected:< 15.0Fixed in:15.0CVE-2021-30826derived 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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.21%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory1

seclists.org

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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.