6.5

CVE-2023-40420: apple ios and ipados

CVSS: 6.5v3.1MediumModified
Published 26-09-2023Last modified 04-11-2025
Open JSON

Vulnerability summary

CVE-2023-40420 is a medium (CVSS 6.5) vulnerability in apple ios and ipados. EPSS estimates a 1.42% chance of exploitation in the next 30 days, higher than 72.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.42%
0%100%
Low · +0.25 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-09-2023
    PublishedVulnerability first disclosed.
  2. 04-11-2025
    Last modifiedVulnerability information updated.

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. Processing web content may lead to a denial-of-service.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.42%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

+0.25 pp

From 1.17% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Apple6 products
  • ios and ipados≥ unspecified, < 17 | ≥ unspecified, < 16.7
  • ipados< 16.7
  • iphone_os< 16.7
  • macos≥ unspecified, < 12.7 | ≥ unspecified, < 13.6 | ≥ unspecified, < 14 | ≥ 12.0.0, < 12.7 | ≥ 13.0, < 13.6
  • tvos≥ unspecified, < 17 | < 17.0

1 vendor · 6 products

References

20 links
Show all 20 references