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Response snapshot Nov 4, 2026, 22:26 UTC

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VulnerabilityCVE-2024-27834Known exploitation

Apple Multiple Products Improper Authentication Vulnerability

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.

At a glance

Exploited
Yes: on CISA's Known Exploited list
Severity
5.5 Medium (CVSS 3.1)
Chance of exploitation
Not estimated
CISA federal deadline
Nov 18, 2026: scheduled
Sources
3 independent sources

What to do

Check the vendor advisory for affected versions and fixes.

CISA's 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.

Read NVD CVE-2024-27834 (opens a new tab)

CISA federal deadline

Federal due date scheduled

Applies to covered US federal agencies; it is not your organization's deadline.

Added to the catalog Known ransomware use: Unknown
CISA catalog (opens a new tab)

Scores and how they were measured

CVSS base severity

5.5

Version 3.1As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    NVD CVE-2024-27834 (opens a new tab)

    NVD record: description, CVSS, affected products, and a CISA SSVC assessment reporting active exploitation.

    Published Checked

  2. Primary source

    Vendor advisory (via NVD references) (opens a new tab)

    The vendor advisory referenced by the CVE record, for affected versions and fixes.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  4. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  5. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  6. Primary source

    CISA KEV entry CVE-2024-27834 (opens a new tab)

    The CVE-2024-27834 catalog entry establishes known exploitation, date added, required action, and the federal due date; not zero-day status.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 4). Apple Multiple Products Improper Authentication Vulnerability (CVE-2024-27834). https://kevwire.com/record/CVE-2024-27834

MLA

"Apple Multiple Products Improper Authentication Vulnerability (CVE-2024-27834)." KEVWire, 4 Nov. 2026, kevwire.com/record/CVE-2024-27834.

Chicago

KEVWire. "Apple Multiple Products Improper Authentication Vulnerability (CVE-2024-27834)." Last modified November 4, 2026. https://kevwire.com/record/CVE-2024-27834.

Evidence summary (plain text)

Apple Multiple Products Improper Authentication Vulnerability (May 14, 2024).
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.
CVSS 5.5 (version 3.1; evidence as of Nov 4, 2026; https://nvd.nist.gov/vuln/detail/CVE-2024-27834).
Sources:
NVD CVE-2024-27834: https://nvd.nist.gov/vuln/detail/CVE-2024-27834
Vendor advisory (via NVD references): https://support.apple.com/en-us/HT214101
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-04T20:50:59.749Z&lastModEndDate=2026-11-04T22:25:56.739Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-04T20:20:58.005Z&lastModEndDate=2026-11-04T21:50:57.968Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-11-04T19:46:01.976Z&lastModEndDate=2026-11-04T21:20:56.309Z&resultsPerPage=500&startIndex=0
CISA KEV entry CVE-2024-27834: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
Record ID: CVE-2024-27834.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Documented by a cited source.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
CISA federal due date: Nov 18, 2026. This is a deadline for covered US federal agencies, not the reader's SLA.
About this data

This record was ingested from a data source. Retrieved: Nov 4, 2026, 22:25 UTC. Ingestion is not an independent editorial investigation.

NVD status: Modified. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

Record detail