CVE-2026-51376Public exploit

Mesh service disruption via unauthenticated cache poisoning

Published Aug 28, 2026 · Updated Aug 28, 2026

Denial of service in BitChat for iOS 1.15.0 allows physically proximate attackers to disrupt mesh messaging via crafted BLE packets. BLEService trusts the packet-embedded sender identity, admits unsigned TTL=0 MESSAGE packets, and caches broadcasts before the final acceptance check. Bluetooth proximity and a fresh ANNOUNCE are required; poisoned entries then replay through gossip synchronization without user interaction.

CVSS severityUnavailable
Unscored
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in BitChat for iOS 1.15.0 allows physically proximate attackers to disrupt mesh messaging via crafted BLE packets. BLEService trusts the packet-embedded sender identity, admits unsigned TTL=0 MESSAGE packets, and caches broadcasts before the final acceptance check. Bluetooth proximity and a fresh ANNOUNCE are required; poisoned entries then replay through gossip synchronization without user interaction.

The record

CVE
CVE-2026-51376
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1642
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1642Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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