7.8

CVE-2021-30792: apple ios Out-of-bounds Write

CVSS: 7.8v3.1HighModified
Published 08-09-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-30792 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in apple ios. EPSS estimates a 1.29% chance of exploitation in the next 30 days, higher than 69.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.29%
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. 08-09-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5. Processing a maliciously crafted image may lead to arbitrary code execution.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.29%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.29% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.29%

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, < 14.7
  • ipados< 14.7
  • iphone_os< 14.7
  • mac_os_x≥ 10.14.0, < 10.14.6 | ≥ 10.15, < 10.15.7 | 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 | 10.14.6:security_update_2020-003 | 10.14.6:security_update_2020-004 | 10.14.6:security_update_2020-005 | 10.14.6:security_update_2020-006 | 10.14.6:security_update_2020-007 | 10.14.6:security_update_2021-001 | 10.14.6:security_update_2021-002 | 10.14.6:security_update_2021-003 | 10.14.6:security_update_2021-004 | 10.14.6:supplemental_update | 10.14.6:supplemental_update_2 | 10.15.7 | 10.15.7:security_update_2020 | 10.15.7:security_update_2020-001 | 10.15.7:security_update_2020-005 | 10.15.7:security_update_2020-007 | 10.15.7:security_update_2021-001 | 10.15.7:security_update_2021-002 | 10.15.7:security_update_2021-003 | 10.15.7:supplemental_update
  • macos≥ unspecified, < 11.5 | < 11.5

1 vendor · 5 products

References

4 links