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CVE-2024-27834

Apple Multiple Products•MEDIUM · CVSS 5.5• In the wild In CISA KEV

What is CVE-2024-27834?

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.

CVSS5.5 NVD 3.1

SeverityMEDIUM

Exploitation In the wild In CISA KEV

EPSS1% · P49

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CWECWE-287

NVD published2024-05-14

NVD last modified2026-11-05

Timeline

2024-05-14Published to the U.S. National Vulnerability Database (NVD)
2026-11-04Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-11-05First covered in a defend.network daily briefing
2026-11-05NVD record last updated
2026-11-18CISA federal remediation deadline (BOD 22-01)

CISA Known Exploited Vulnerability

Apple Multiple Products Improper Authentication Vulnerability

Added to KEV2026-11-04

Federal patch deadline2026-11-18

Known ransomware useUnknown

Affected product

Apple Multiple Products

NVD also lists CPE entries for: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos

Remediation Steps

Apply the vendor security update for Apple Multiple Products as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 1 of November 2026 (November 2 – 8)
APT flaw, Rails RCE, Zyxel zero-days, Debian/Ubuntu patch urgency (2026-11-05)

Related vulnerabilities

CVE-2026-86950 – Apple Multiple Products (same product)
CVE-2026-65400 – Apple MacOS (same product)
CVE-2026-75682 – Adobe Connect (same product)
CVE-2026-11645 – Google Chromium V8 (same product)
CVE-2026-34621 – Adobe Acrobat And Reader (same product)
CVE-2026-5281 – Google Dawn (same product)

Apple: 95 known exploited vulnerabilities (CISA KEV) →

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.