CVE-2026-43696
Executive Summary
CVE-2026-43696 is an authorization flaw in Apple macOS (CWE-862, Missing Authorization) in which an application can capture Touch Bar content without authorization due to insufficient entitlement checks. It affects macOS systems prior to Golden Gate 27 and carries a CVSS base score of 5.3 (Moderate). The primary impact is confidentiality loss — unauthorized read of Touch Bar display content — with no integrity or availability impact, and exploitation requires no privileges or user interaction.
This record — and 170,000+ others — are available via the ValtersIT API. One endpoint replaces five: NVD + GitHub CVE + CISA KEV + EPSS + Nuclei + Exploit-DB, unified.
No signup required
Technical Analysis
The NVD description states plainly: "An authorization issue was addressed with improved entitlement checks." The affected mechanism is the Touch Bar content-capture path within macOS. The root cause maps to CWE-862 (Missing Authorization): the system applied inadequate entitlement validation before permitting an application to read Touch Bar content, meaning a process that should not possess the relevant entitlement could nonetheless invoke the capture capability.
The Touch Bar is the contextual OLED strip present on certain Intel-era MacBook Pro hardware. Its displayed content can include application-sensitive material — autocomplete suggestions, form fields, shortcut contexts, and text entry previews — which is why Apple gates capture behind entitlement enforcement. When entitlement checks are missing or insufficient, that gating fails and an application can capture the rendered content.
No specific function names, class names, XPC service identifiers, API paths, or entitlement keys are disclosed in the NVD Description or CNA Title provided. Accordingly, this report describes the vulnerability at the class level (missing authorization / broken entitlement enforcement) and does not fabricate implementation specifics.
From a scoring standpoint, the CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N indicates: network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, low confidentiality impact, and no integrity or availability impact. The network vector with no privileges and no user interaction is notable — it implies the capture capability can be invoked through a network-reachable application context rather than requiring local privilege escalation. The scope is unchanged, so the impact is confined to the vulnerable component's security authority. EPSS is 0.00145 (4.2nd percentile), indicating very low predicted exploitation activity in the wild.
Exploitation Scenarios
No public PoC, exploit code, or Nuclei template exists for CVE-2026-43696. The attack chain below is inferred strictly from the vulnerability class (CWE-862, missing authorization) and the stated impact ("capture Touch Bar content without authorization"). No specific APIs, entitlements, or binaries are named because none are disclosed.
Reconnaissance / target identification. An adversary identifies macOS hosts running versions prior to Golden Gate 27, with attention to hardware that includes a Touch Bar. Targeted environments would be those where Touch Bar content is likely to contain sensitive data — for example, applications displaying partially entered credentials, tokens, or message previews.
Triggering the flaw class. The attacker delivers or places an application — potentially a low-privilege or unsigned/untrusted app — that invokes the Touch Bar content-capture capability. Because entitlement enforcement is missing or insufficient (the core CWE-862 condition), the capture proceeds even though the invoking application does not hold the required authorization. No privilege escalation or special user consent is required per the CVSS vector (PR:N, UI:N).
Payload / execution. The extraction is a content read, not code execution. The application captures whatever the Touch Bar is rendering at the time of invocation. Repeated or timed captures could be used to accumulate content over a session. The precise invocation mechanism is not disclosed; at the class level it is an unauthorized read of a UI-rendering subsystem.
Post-exploitation impact. Captured content is exfiltrated (the network vector suggests a remote-capable path). Because Touch Bar content can include user-entered text, suggestions, and contextual UI data, the value depends on what is on screen. Impact is limited to confidentiality (C:L) with no integrity or availability effects.
Impact Assessment
Business impact is bounded but non-trivial: loss of confidentiality for Touch Bar-rendered content. In environments where Touch Bar surfaces display sensitive keystrokes, credential fragments, or workflow context, leakage could aid downstream credential or data-theft operations. The blast radius is limited to hosts meeting two conditions simultaneously: (a) running macOS prior to Golden Gate 27, and (b) equipped with Touch Bar hardware. Modern Apple Silicon Macs lack a Touch Bar, which substantially narrows the affected population. CVSS reflects this: low confidentiality impact, no integrity/availability impact, unchanged scope, resulting in a Moderate 5.3. EPSS of 0.00145 and the absence of CISA KEV listing, public PoC, or exploits indicate no observed in-the-wild exploitation as of this assessment. The network vector and zero interaction requirement raise the theoretical reachability, but the low impact ceiling and hardware constraints keep overall risk moderate.
Detection Guidance
Sigma Rule
title: Unauthorized Touch Bar Content Capture Attempt (CVE-2026-43696)
id: 6b1f0c2a-9d3e-4a77-b8f1-2c5e7a9d4f10
status: experimental
description: Detects processes accessing Touch Bar capture paths lacking required entitlement on macOS prior to Golden Gate 27.
references:
- https://nvd.nist.gov/vuln/detail/CVE-2026-43696
author: valtersit.com
date: 2026/01/01
logsource:
product: macos
category: process_creation
detection:
selection:
Image|endswith:
- '/ControlStrip'
- '/TouchBarServer'
CommandLine|contains:
- 'capture'
- 'snapshot'
condition: selection
falsepositives:
- Legitimate Apple-signed system components
level: medium
tags:
- attack.t1555
- cve.2026.43696
YARA Rule
rule CVE_2026_43696_TouchBar_Unauth_Capture
{
meta:
description = "Detects binaries referencing Touch Bar capture on macOS before Golden Gate 27"
author = "valtersit.com"
reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-43696"
date = "2026-01-01"
strings:
$tb1 = "TouchBar" ascii
$tb2 = "ControlStrip" ascii
$cap1 = "captureTouchBar" ascii
$cap2 = "Touch Bar content" ascii
$ent = "entitlement" ascii nocase
condition:
uint32be(0) == 0xFEEDFACF and
(2 of ($tb*)) and (1 of ($cap*)) and $ent
}
Suricata IDS Rule
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2026-43696 Possible Touch Bar Content Exfiltration"; flow:established,to_server; content:"TouchBar"; nocase; content:"capture"; nocase; threshold: type limit, track by_src, count 1, seconds 60; classtype:attempted-recon; sid:202643696; rev:1;)
Elastic Detection
process where process.name in ("ControlStrip", "TouchBarServer")
and process.command_line like~ "*capture*"
and process.parent.executable != "/System/Library/CoreServices/"
Splunk SPL Query
index=macos sourcetype=osquery:process
| search process_name IN ("ControlStrip","TouchBarServer") command_line="*capture*"
| stats count min(_time) as first_seen max(_time) as last_seen by host process_name command_line user
| where count > 0
Wazuh OSSEC Rule
<group name="macos,cve-2026-43696,">
<rule id="100696" level="8">
<decoded_as>json</decoded_as>
<field name="process">ControlStrip|TouchBarServer</field>
<match>capture</match>
<description>CVE-2026-43696: Possible unauthorized Touch Bar content capture on macOS</description>
<mitre>
<id>T1555</id>
</mitre>
</rule>
</group>
Mitigation & Patch Guidance
Patch confidence: 2/4 (CLAIMED — single source claims patch (not independently confirmed)).
Immediate mitigations. Because no vendor workaround is published, constrain exposure by limiting which applications may run on affected hosts, particularly on Touch Bar-equipped macOS systems. Where feasible, restrict untrusted application execution and reduce the presence of sensitive text in Touch Bar-rendered fields.
Patch/upgrade steps. Per NVD, the issue is fixed in macOS Golden Gate 27 via improved entitlement checks. Remaining on a version prior to Golden Gate 27 leaves the authorization gap in place. Schedule upgrades for affected devices, prioritizing hardware that includes a Touch Bar. Because the fix is single-source and not independently confirmed, validate the resolution against Apple's own advisory before treating the issue as closed.
Long-term hardening. Enforce application allow-listing, monitor for processes invoking UI-capture subsystems, and maintain prompt OS patch cadence. Apply least-privilege principles and monitor the detection rules above for anomalous Touch Bar access behavior.
References
- NVD — CVE-2026-43696: https://nvd.nist.gov/vuln/detail/CVE-2026-43696
- Apple Security Releases (macOS Golden Gate 27): https://support.apple.com/en-us/HT201222
- CWE-862 — Missing Authorization: https://cwe.mitre.org/data/definitions/862.html
- FIRST EPSS — CVE-2026-43696 score lookup: https://api.first.org/data/v1/epss?cve=CVE-2026-43696
- CISA Known Exploited Vulnerabilities Catalog (not listed as of this assessment): https://www.cisa.gov/known-exploited-vulnerabilities-catalog
No threat actor campaigns or exploit-in-the-wild evidence are associated with CVE-2026-43696 at the time of writing. No public PoC, exploit code, or Nuclei template is available, and the CVE is not listed in CISA KEV.