Is CVE-2021-30952 actively exploited?

Yes. CVE-2021-30952 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-30952 be exploited remotely?

The attack vector of CVE-2021-30952 has not been classified yet.

What is the CVSS score of CVE-2021-30952?

CVE-2021-30952 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-30952

UNKNOWNCISA KEVIN THE WILD

CVE-2021-30952

Published: April 11, 2026

EPSS:1.24%probability of exploitation in 30 daysPercentile:79.3th

Official Description

Apple tvOS, macOS, Safari, iPadOS and watchOS contain an integer overflow or wraparound vulnerability due to the processing of maliciously crafted web content that may lead to arbitrary code execution.

NVD Source

Technical Analysis

CVE-2021-30952 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-30952 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):

Apple

CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2021-30952

CISA Adds Five Known Exploited Vulnerabilities to Catalog

CISA Alerts· Mar 5, 2026

CISA has added five new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2017-7921 Hikvision Multiple Products Improper Authentication Vulnerability CVE-2021-22681 Rockwell Multiple Products Insufficient Protected Credentials Vulnerability CVE-2021-30952 Apple Multiple Products Integer Overflow or Wraparound Vulnerability CVE-2023-41974 Apple iOS and iPadOS Use-After-Free Vulnerability CVE-2023-43000 Apple Multiple products Use-After-Free Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vuln [xlite_meta score:60 src:CISA Alerts xlite_fp:165b5f850ff27845912a94f08bffe9b643bd34ae020914d5914015be5e7ed84e]