Is CVE-2021-30983 being actively exploited?

Yes. CVE-2021-30983 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on June 27, 2022.

What is the CVSS score for CVE-2021-30983?

CVE-2021-30983 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2021-30983

HIGH · CVSS 7.8CISA KEV: actively exploitedEPSS 2.9%EU EUVD: exploited

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-120
EPSS score: 2.9% (87th percentile)
In CISA KEV: Yes, added June 27, 2022
In EU EUVD: Yes (EUVD-2021-17900)
Published: August 24, 2021
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Apple iOS and iPadOS Buffer Overflow Vulnerability

Added to the KEV catalog on June 27, 2022; federal remediation due July 18, 2022.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-17900 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

apple / ipados
apple / iphone os

Certified products that may be affected

3 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Strong Customer Authentication pour Apple Pay sur iPhone SE (de seconde génération) exécutant iOS 14.5.1 Version 18E212 - Apple Inc. - Common Criteria ANSSI-CC-2022/05 - active
Strong Customer Authentication pour Apple Pay sur iPhone (SoC A12 Bionic) exécutant iOS 14.5.1 Version 18E212 - Apple Inc. - Common Criteria ANSSI-CC-2022/04 - active
Apple iPadOS 15 - Apple Inc. - Common Criteria CCEVS-VR-VID-11238-2022 - archived

References

https://support.apple.com/en-us/HT212976(Release Notes, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30983(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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