What is CVE-2024-44309?

CVE-2024-44309 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2024-11-20.

How severe is CVE-2024-44309?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2024-44309 known to be exploited?

Yes. CVE-2024-44309 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-11-21), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

XSS in Apple iOS And Ipados

CVE-2024-44309

A cookie management issue was addressed with improved state management. This issue is fixed in Safari 18.1.1, iOS 17.7.2 and iPadOS 17.7.2, iOS 18.1.1 and iPadOS 18.1.1, macOS Sequoia 15.1.1, visionOS 2.1.1. Processing maliciously crafted web content may lead to a cross site scripting attack. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-11-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.226 (97.7th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.226 · newest: 0.226 · change: 0.000

Affected products

Apple iOS And Ipados — versions 0
Apple Ipados
Apple Iphone OS
Apple macOS — versions 0
Apple Safari — versions 0
Apple Visionos — versions 0
Debian Linux — versions 11.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-11-21. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2024-12-12.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

support.apple.com/en-us/121752 (Vendor Advisory)
support.apple.com/en-us/121753 (Vendor Advisory)
support.apple.com/en-us/121754 (Vendor Advisory)
support.apple.com/en-us/121755 (Vendor Advisory)
support.apple.com/en-us/121756 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2024-44309?: CVE-2024-44309 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2024-11-20.
How severe is CVE-2024-44309?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2024-44309 known to be exploited?: Yes. CVE-2024-44309 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-11-21), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.