9.3

CVE-2020-3843: apple ios-1 Out-of-bounds Write

CVSS: 9.3v2.0HighModified
Published 27-02-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-3843 is a high (CVSS 9.3) Out-of-bounds Write vulnerability in apple ios-1. EPSS estimates a 3.58% chance of exploitation in the next 30 days, higher than 89.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
3.58%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-02-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 12.4.7, watchOS 5.3.7. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

3.58%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

-0.01 pp

From 3.59% on 21-09-2026

21-09-202621-10-2026
EPSS score
3.58%

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

Affected systems

Apple4 products

1 vendor · 4 products

References

3 links