Apple iOS/iPadOS/macOS/tvOS/visionOS/watchOS up to 18.7.8/26.4 File denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apple iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 18.7.8/26.4. Impacted is an unknown function of the component File Handler. This manipulation causes denial of service. This vulnerability is handled as CVE-2026-28977. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS, iPadOS, macOS, tvOS, visionOS and watchOS up to 18.7.8/26.4. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component File Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing a maliciously crafted file may lead to unexpected app termination.

It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2026-28977 since 03/03/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/18/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 18.7.9 or 26.5 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 6.2
ADP CISA Vector: 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: iOS/iPadOS/macOS/tvOS/visionOS/watchOS 18.7.9/26.5

Timelineinfo

03/03/2026 CVE reserved
05/12/2026 +69 days Advisory disclosed
05/12/2026 +0 days VulDB entry created
05/18/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2026-28977 (🔒)
GCVE (CVE): GCVE-0-2026-28977
GCVE (VulDB): GCVE-100-362851
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 05/12/2026 04:20
Updated: 05/18/2026 13:42
Changes: 05/12/2026 04:20 (57), 05/18/2026 13:42 (11)
Complete: 🔍
Cache ID: 216::103

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