Background exploitation KEV catalog No authentication

CVE-2024-44309

Apple Multiple Products Cross-Site Scripting (XSS) Vulnerability

CheckOps priority index

5.6/10 Patch within 7 days

Severity6.3

Probability2.2

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 21.9% −0.6 pts in 7 days

CVSS 3.1 6.3 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:

Exploited for 712 days 21 Nov 2024

CISA due date 12 Dec 2024 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)21 Nov 2024
Exploited in EUVD (ENISA)21 Nov 2024
Used by ransomwareno
EPSS above 10 %21.9%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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.

Affected products

SafarimacOSiOS and iPadOSvisionOSMultiple Products

Affected versions

0 <18.1.1
0 <15.1.1
0 <17.7.2
0 <2.1.1

Weaknesses (CWE)

CWE-79

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

19 Nov 2024
Published
21 Nov 2024
Exploitation reported (ENISA)
21 Nov 2024
Added to the KEV catalog
12 Dec 2024
CISA remediation due date
25 Sept 2026
EPSS peak: 22.6%

References

Other exploited vulnerabilities from the same vendor

CVE-2026-86950Apple Multiple Products Out-of-Bounds Write Vulnerability
6.7 · Actively exploited
CVE-2026-65400Apple macOS Improper Authentication Vulnerability
5.8 · Actively exploited
CVE-2025-43520Apple Multiple Products Classic Buffer Overflow Vulnerability
3.4 · Background exploitation
CVE-2025-43510Apple Multiple Products Improper Locking Vulnerability
4.3 · Background exploitation
CVE-2025-31277Apple Multiple Products Buffer Overflow Vulnerability
5.4 · Background exploitation
CVE-2023-43000Apple Multiple products Use-After-Free Vulnerability
5.4 · Background exploitation