CVE-2024-27876: Apple iOS and iPadOS · Race Condition
Affects Apple iOS and iPadOSSource CVE Database V5
Not known to be exploited · CVSS 8.1 High · fixed in 17.7 : patch Apple iOS and iPadOS soon.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 17.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apple iOS and iPadOS | Affected
| Fixed in– |
AI-suggested
This vulnerability has been fixed by Apple in iOS 17.7, iPadOS 17.7, iOS 18, iPadOS 18, macOS Sequoia 15, macOS Sonoma 14.7, macOS Ventura 13.7, and visionOS 2. Users and administrators should apply these official updates to remediate the issue. Patch status is confirmed by the vendor advisory. No additional mitigations are indicated.
Description
CVE-2024-27876 is a high-severity vulnerability in Apple iOS and iPadOS where unpacking a maliciously crafted archive may allow an attacker to write arbitrary files due to a race condition. This issue affects multiple Apple operating systems and has been addressed with improved locking mechanisms. The vulnerability is fixed in iOS 17.7, iPadOS 17.7, iOS 18, iPadOS 18, and several macOS versions including Sequoia 15, Sonoma 14.7, and Ventura 13.7, as well as visionOS 2. The vulnerability has a CVSS score of 8.1, indicating a high impact on confidentiality and integrity, but no known exploits are reported in the wild at this time.
References
- support.apple.com/en-us/121234 (opens in a new tab)
- support.apple.com/en-us/121238 (opens in a new tab)
- support.apple.com/en-us/121246 (opens in a new tab)
- support.apple.com/en-us/121247 (opens in a new tab)
- support.apple.com/en-us/121249 (opens in a new tab)
- support.apple.com/en-us/121250 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/40 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/39 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/36 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/33 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/41 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/32 (opens in a new tab)