Integer overflow in Apple Ipados

CVE-2022-40303

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative…

Vulnerability class: Integer Overflow

EPSS: 0.228 (97.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-40303?
CVE-2022-40303 is a high-severity vulnerability in Apple Ipados, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2022-11-23.
How severe is CVE-2022-40303?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-40303 known to be exploited?
7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.