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.
Published 2021-09-08 15:15:13
Updated 2022-06-28 14:11:45
Source Apple Inc.
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2021-1883

Exploit prediction scoring system (EPSS) score for CVE-2021-1883

0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-1883

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
NIST
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
1.8
3.6
NIST

CWE ids for CVE-2021-1883

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-1883

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