CVE-2024-27834Safari Authentication Bypass
webkit: pointer authentication bypass
Published May 15, 2024 · Updated Nov 4, 2026 · Also known as DEBIAN-CVE-2024-27834, UBUNTU-CVE-2024-27834, USN-6788-1
Key Facts
Patch immediately- CVE-2024-27834 is a medium-severity vulnerability (CVSS 5.5 v3.1) affecting Safari (Apple), Webkitgtk, Wpe Webkit (Wpewebkit) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV since Nov 4, 2026. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 0.6% probability of exploitation in the next 30 days.
- Fixed versions are available, including Ipados 17.5, Iphone OS 17.5, macOS 14.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS (30-day exploit likelihood)
0.6%
Higher than 48.7% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
45/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 4, 2026
903 days after publication
Federal due date
Nov 18, 2026
13 days left
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
2
Reports of active use
Required action (CISA): Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Advisories And Exploit References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2024-27834
- advisoryhttps://ubuntu.com/security/CVE-2024-27834
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2024-27834
- advisoryRHSA-2023:4201
- advisoryRHSA-2023:4202
- advisoryRHSA-2024:9636
Description
The issue was addressed with improved checks. This issue is fixed in Safari 17.5, iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 17.5, watchOS 10.5. An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 4, 2026 | Nov 18, 2026 | Not reported |
| Industry KEV feed | Nov 4, 2026 | Nov 18, 2026 | Not reported |
| CIRCL KEV | Nov 4, 2026 | Nov 18, 2026 | Not reported |
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Products
403 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SafariApple | See advisory | 17.5 |
| WebkitgtkWebkitgtk | See advisory | 2.44.2 |
| Wpe WebkitWpewebkit | See advisory | 2.44.2 |
| IpadosApple | See advisory | 17.5 |
| Iphone OSApple | See advisory | 17.5 |
Patched Releases
Ipados
17.5
Iphone OS
17.5
macOS
14.5
Safari
17.5
tvOS
17.5
watchOS
10.5
iOS and iPadOS
16.7.8, 17.5
libjavascriptcoregtk-4_0-18
2.44.2-150200.112.1, 2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.44.2-4.7.1, 2.46.0-150200.121.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1, 2.46.0-4.15.1
libjavascriptcoregtk-4_0-18-32bit
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.44.2-4.7.1, 2.46.0-150600.12.12.1
libjavascriptcoregtk-4_1-0
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1
libjavascriptcoregtk-4_1-0-32bit
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150600.12.12.1
libjavascriptcoregtk-6_0-1
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1
libwebkit2gtk-4_0-37
2.44.2-150200.112.1, 2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.44.2-4.7.1, 2.46.0-150200.121.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1, 2.46.0-4.15.1
libwebkit2gtk-4_0-37-32bit
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150600.12.12.1
libwebkit2gtk-4_1-0
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1
libwebkit2gtk-4_1-0-32bit
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150600.12.12.1
libwebkit2gtk3-lang
2.44.2-150200.112.1, 2.44.2-4.7.1, 2.46.0-150200.121.1, 2.46.0-4.15.1
libwebkitgtk-6_0-4
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1
libWPEWebInspectorResources
2.44.2-1.1
libWPEWebKit-2_0-1
2.44.2-1.1
typelib-1_0-JavaScriptCore-4_0
2.44.2-150200.112.1, 2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.44.2-4.7.1, 2.46.0-150200.121.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1, 2.46.0-4.15.1
typelib-1_0-JavaScriptCore-4_1
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1
typelib-1_0-JavaScriptCore-6_0
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150600.12.12.1
typelib-1_0-WebKit-6_0
2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.46.0-150600.12.12.1
typelib-1_0-WebKit2-4_0
2.44.2-150200.112.1, 2.44.2-150400.4.83.2, 2.44.2-150600.12.3.1, 2.44.2-4.7.1, 2.46.0-150200.121.1, 2.46.0-150400.4.91.1, 2.46.0-150600.12.12.1, 2.46.0-4.15.1
Timeline
Publicly disclosed
May 15, 2024
Added to CISA KEV
Nov 4, 2026
Added to Industry KEV feed
Nov 4, 2026
Added to CIRCL KEV
Nov 4, 2026
Last updated
Nov 4, 2026
Weakness Type
- CWE-277 Insecure Inherited Permissions
- CWE-287 Improper Authentication
- CWE-305 Authentication Bypass by Primary Weakness
References
- advisorysecurity-tracker.debian.org · CVE-2024-27834
- advisoryubuntu.com · CVE-2024-27834
- advisorycve.org · CVERecord
- advisoryRHSA-2023:4201
- advisoryRHSA-2023:4202
FAQ
Common Questions.
The issue was addressed with improved checks.
Affected: Safari (Apple); Webkitgtk; Wpe Webkit (Wpewebkit), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV since Nov 4, 2026.
Yes. It was added on Nov 4, 2026 with a federal remediation due date of Nov 18, 2026.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including Ipados 17.5, Iphone OS 17.5, macOS 14.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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