Buffer overflow in Apple iOS And Ipados
CVE-2021-1883
This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted server messages may lead to heap corruption.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.020 (80.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Apple iOS And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone OS
- Apple macOS — versions unspecified
- Apple Mac OS X — versions 10.14.6, 10.15.6, 10.15.7
- Apple tvOS — versions unspecified
- Apple watchOS — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT212317 (Vendor Advisory)
- support.apple.com/en-us/HT212323 (Vendor Advisory)
- support.apple.com/en-us/HT212324 (Vendor Advisory)
- support.apple.com/en-us/HT212530 (Vendor Advisory)
- support.apple.com/en-us/HT212325 (Vendor Advisory)
- support.apple.com/en-us/HT212531 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1883?
- CVE-2021-1883 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-09-08.
- How severe is CVE-2021-1883?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-1883 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.