CVE-2021-30833
Unpacking a maliciously crafted archive may allow an attacker to write arbitrary files.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 42.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
This issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.0.1. Unpacking a maliciously crafted archive may allow an attacker to write arbitrary files.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 42.67% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- apple/mac os x · apple/macos
- Source
- product-security@apple.com
EPSS 42.7% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://support.apple.com/en-us/HT212869Vendor Advisory
- https://support.apple.com/kb/HT212871Vendor Advisory
- https://support.apple.com/kb/HT212872Vendor Advisory
- https://support.apple.com/en-us/HT212869Vendor Advisory
- https://support.apple.com/kb/HT212871Vendor Advisory
- https://support.apple.com/kb/HT212872Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.