VulnerabilityPublished 14 Sep 2026Updated 26 Oct 2026

CVE-2026-84532: Apple iOS and iPadOS · Out-of-bounds Read

Affects Apple iOS and iPadOSSource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium : upgrade to 27 or 26.7 when convenient.

Data as of 30 Oct 2026, 12:04 UTC

CVSS 3.1 base score

5.4Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CISA-ADP	CVSS 3.1	5.4

EPSS: 0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 27, 26.7, 15.8

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade iOS and iPadOS to 27 or 26.7; macOS to 27, 26.7 or 15.8; tvOS and visionOS to 27.

Affected software

Product	Affected	Fixed in
AppleiOS and iPadOS	Affected <27	Fixed in 27
AppleiOS and iPadOS	Affected <26.7	Fixed in 26.7
ApplemacOS	Affected <27	Fixed in 27
ApplemacOS	Affected <26.7	Fixed in 26.7
ApplemacOS	Affected <15.8	Fixed in 15.8
AppletvOS	Affected <27	Fixed in 27

AI-suggested

This vulnerability is fixed in iOS 26.7 and later, iPadOS 26.7 and later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27. Users and administrators should apply these official updates to remediate the issue. No additional mitigation is required beyond installing the vendor-provided patches.

Description

CVE-2026-84532 is an out-of-bounds read vulnerability affecting Apple operating systems including iOS, iPadOS, and macOS. Opening a maliciously crafted file may cause unexpected process termination or disclosure of process memory. The issue is addressed by improved input validation and fixed in iOS 26.7, iOS 27, iPadOS 26.7, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27.

Impact

Successful exploitation may cause unexpected termination of affected processes, resulting in denial of service, or may disclose portions of process memory, potentially leaking sensitive information. The CVSS score of 5.4 (medium severity) reflects limited confidentiality impact and no integrity impact, with low attack complexity and no required privileges but user interaction needed.

Summary

This vulnerability involves an out-of-bounds read due to insufficient input validation when processing certain files. Exploiting this flaw could lead to a crash (denial of service) or unintended disclosure of process memory, potentially exposing sensitive information. The flaw is fixed in multiple Apple OS releases starting with iOS and iPadOS 26.7 and 27, macOS versions Golden Gate 27, Sequoia 15.8, Tahoe 26.7, as well as tvOS 27 and visionOS 27.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Oct 2026, 18:26 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

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