6.5

CVE-2021-1799: apple ios and ipados

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-1799DEBIAN-CVE-2021-1799
Published 02-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-1799 is a medium (CVSS 6.5) vulnerability in apple ios and ipados. EPSS estimates a 1.76% chance of exploitation in the next 30 days, higher than 77.6% 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
1.76%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 5
DSA-4877-1MGASA-2021-0181OPENSUSE-SU-2021:0637-1RHSA-2021:4381RHSA-2025:10364SUSE-SU-2021:1430-1

Timeline

  1. 02-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A port redirection issue was addressed with additional port validation. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. A malicious website may be able to access restricted ports on arbitrary servers.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.76%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.76% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.76%

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

Apple7 products
  • ios and ipados≥ unspecified, < 14.4
  • ipad_os< 14.4
  • iphone_os< 14.4
  • macos≥ unspecified, < 11.2 | ≥ unspecified, < 7.3 | ≥ unspecified, < 14.4 | ≥ unspecified, < 14.0 | ≥ 11.0.1, < 11.2
  • safari< 14.0.3
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.30.6-0ubuntu0.18.04.1 | < 2.30.6-0ubuntu0.20.04.1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian2 products
  • webkit2gtk< 2.30.6-1
  • wpewebkit< 2.30.6-1
Fedoraproject1 product
Webkitgtk1 product

5 vendors · 16 products

References

13 links
Show all 13 references