CVE-2021-30983
Apple iOS and iPadOS: Buffer Overflow
As of , CVE-2021-30983 in Apple iOS and iPadOS is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.
- Exploited
- Yes: CISA listed it on 27 June 2022
- US federal deadline
- 18 July 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
- 0.03Higher than 86% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.01 on 27 June 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 and iPadOS contain a buffer overflow vulnerability that could allow an application to execute code with kernel privileges.
CISA's description
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.
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-120
- Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- CWE-119
- Improper Restriction of Operations within the Bounds of a Memory Buffer
- 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.
iOS and iPadOS: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2025-24200Incorrect Authorization | Apple iOS and iPadOS | Patch soon | 0.04 | ||
| CVE-2023-41974Use-After-Free | Apple iOS and iPadOS | Patch soon | 0.02 | ||
| CVE-2023-42824Kernel Privilege Escalation | Apple iOS and iPadOS | Patch soon | 0.01 | ||
| CVE-2022-42827Out-of-Bounds Write | Apple iOS and iPadOS | Patch soon | 0.01 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org