CVE-2021-30883
Apple Multiple Products: Memory Corruption
As of , CVE-2021-30883 in Apple Multiple Products is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.
- Exploited
- Yes: CISA listed it on 23 May 2022
- US federal deadline
- 13 June 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.15Higher than 96% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.01 on 23 May 2022EPSS on the day CISA listed it.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- No vendor link in CISA's entry
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
Apple iOS, macOS, watchOS, and tvOS contain a memory corruption vulnerability that could allow for remote code execution.
CISA's description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..
The CVE record's description, from apple
- CVE published
- 24 August 2021
- Assigned by
- apple
- CVSS
- 7.8 High (CVSS 3.1, from CISA-ADP)
- CWE-787
- Out-of-bounds Write
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Multiple Products: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2026-86950Out-of-Bounds Write | Apple Multiple Products | Patch nowForensic triage required by CISA; listed in the last 14 days | 0.01 | ||
| CVE-2021-30860Integer Overflow | Apple Multiple Products | Patch this weekEPSS 0.76 | 0.76 | ||
| CVE-2023-32434Integer Overflow | Apple Multiple Products | Patch this weekEPSS 0.52 | 0.52 | ||
| CVE-2019-8605Use-After-Free | Apple Multiple Products | Patch soonVerified Exploit-DB entry | 0.18 | ||
| CVE-2020-3837Memory Corruption | Apple Multiple Products | Patch soonVerified Exploit-DB entry | 0.15 | ||
| CVE-2019-8506Type Confusion | Apple Multiple Products | Patch soonVerified Exploit-DB entry | 0.16 | ||
| CVE-2023-28205WebKit Use-After-Free | Apple Multiple Products | Patch soon | 0.27 | ||
| CVE-2021-30807Memory Corruption | Apple Multiple Products | Patch soon | 0.29 | ||
| CVE-2025-31200Memory Corruption | Apple Multiple Products | Patch soon | 0.19 | ||
| CVE-2025-24085Use-After-Free | Apple Multiple Products | Patch soon | 0.18 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org