Vulnerability in Apple Iphone_os

CVE-2016-9843

The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation.

EPSS: 0.170 (95.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-9843?
CVE-2016-9843 is a critical-severity vulnerability in Apple Iphone_os. CVSS score: 9.8/10. Published 2017-05-23.
How severe is CVE-2016-9843?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-9843 known to be exploited?
10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.