7.8

CVE-2020-9844: apple ios Double Free

CVSS: 7.8v2.0HighModified
Published 09-06-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-9844 is a high (CVSS 7.8) Double Free vulnerability in apple ios. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 77.9% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.77%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A double free issue was addressed with improved memory management. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5. 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

1.77%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.77% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.77%

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

Apple5 products
  • ios≥ unspecified, < iOS 13.5 and iPadOS 13.5
  • ipados< 13.5
  • iphone_os< 13.5
  • mac_os_x≥ 10.13, < 10.13.6 | ≥ 10.14, < 10.14.6 | ≥ 10.15, < 10.15.5 | 10.13.6 | 10.13.6:security_update_2018-002 | 10.13.6:security_update_2018-003 | 10.13.6:security_update_2019-001 | 10.13.6:security_update_2019-002 | 10.13.6:security_update_2019-003 | 10.13.6:security_update_2019-004 | 10.13.6:security_update_2019-005 | 10.13.6:security_update_2019-006 | 10.13.6:security_update_2019-007 | 10.13.6:security_update_2020-001 | 10.13.6:security_update_2020-002 | 10.14.6 | 10.14.6:security_update_2019-001 | 10.14.6:security_update_2019-002 | 10.14.6:security_update_2019-004 | 10.14.6:security_update_2019-005 | 10.14.6:security_update_2019-006 | 10.14.6:security_update_2019-007 | 10.14.6:security_update_2020-001 | 10.14.6:security_update_2020-002
  • macos≥ unspecified, < macOS Catalina 10.15.5

1 vendor · 5 products

References

2 links