CVE-2024-23255: apple ios and ipados Improper Authentication
CVSS: 9.1v3.1CriticalModified
Published 08-03-2024Last modified 02-04-2026
Vulnerability summary
CVE-2024-23255 is a critical (CVSS 9.1) Improper Authentication vulnerability in apple ios and ipados. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.2% of scored vulnerabilities.
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)EPSS score
0.67%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-03-2024PublishedVulnerability first disclosed.
- 02-04-2026Last modifiedVulnerability information updated.
Description
An authentication issue was addressed with improved state management. This issue is fixed in iOS 17.4 and iPadOS 17.4, macOS Sonoma 14.4. Photos in the Hidden Photos Album may be viewed without authentication.
CVSS metrics
2 scores · 2 sources · 1 versionCritical 9.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NSources2 sources · 2.4–9.1
- NVDNIST2.4LowCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.67%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
0.00 pp
From 0.67% on 20-09-2026
20-09-202620-10-2026
EPSS score0.67%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected systems
Apple4 products
- ios and ipados< 17.4
- ipad_os< 17.4
- iphone_os< 17.4
- macos< 14.4 | ≥ 14.0, < 14.4
1 vendor · 4 products