# CVE-2021-30983: Apple iOS and iPadOS Buffer Overflow Vulnerability

Source: https://junglewise.ai/threats/cve-2021-30983-apple-ios-and-ipados-buffer-overflow-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-06-27. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-30983 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-06-27

A buffer overflow vulnerability in Apple iOS and iPadOS was addressed through improved memory handling. A local application may exploit this flaw to execute arbitrary code with kernel privileges.

Technologies: [Apple iPadOS](https://junglewise.ai/threats/technologies/ipados), [Apple macOS](https://junglewise.ai/threats/technologies/macos), [Apple watchOS](https://junglewise.ai/threats/technologies/watchos), [Cisco IOS](https://junglewise.ai/threats/technologies/ios). Vendors: [Apple](https://junglewise.ai/threats/vendors/apple), [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2021-30983 exploited in the wild?** Yes. CVE-2021-30983 is known to be exploited in the wild, first recorded on 27 June 2022. Treat it as urgent.

**How severe is CVE-2021-30983?** Critical severity, with a CVSS score of 7.8, published 27 June 2022.

**Which products and versions are affected?** Apple iOS < 15.2; Apple iPadOS < 15.2.

**Is there a fix for CVE-2021-30983?** A patch was published on 2021-12-23: Fixed in iOS 15.2 and iPadOS 15.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2021-30983 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2021-30983?** Check whether you run Apple iPadOS, Apple macOS, Apple watchOS or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Apple iOS < 15.2
- Apple iPadOS < 15.2

## Timeline

- 2021-08-24: disclosed: NVD Published Date
- 2021-12-23: patched: Fixed in iOS 15.2 and iPadOS 15.2
- 2022-06-27: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-06-27: exploited: Reported as exploited in the wild

## Related threats

- [Apple Bluetooth use-after-free vulnerability](https://junglewise.ai/threats/cve-2026-113970-a-use-after-free-issue-was-addressed-with-improved-memory)
- [Apple iOS, iPadOS, macOS, and related platforms rate limit bypass in AirPlay pairing](https://junglewise.ai/threats/cve-2026-113969-a-logic-issue-was-addressed-with-improved-state-management-this)
- [Apple iOS and iPadOS Bluetooth pairing code rate limit bypass](https://junglewise.ai/threats/cve-2026-113968-a-logic-issue-was-addressed-with-improved-state-management-this)
- [Apple iOS/iPadOS Bluetooth pairing bypass](https://junglewise.ai/threats/cve-2026-113965-this-issue-was-addressed-with-improved-checks-this-issue-is)
- [Apple iOS and iPadOS Bluetooth pairing rate limit bypass in CoreUtils](https://junglewise.ai/threats/cve-2026-113964-a-logic-issue-was-addressed-with-improved-state-management-this)