CVE-2026-87931Public exploit

Memory corruption via unchecked ANCS event copy

Published Sep 9, 2026 · Updated Sep 10, 2026

A buffer overflow in Behavioral Technology Group Pavlok 20260707 allows remote attackers to corrupt memory via an ANCS event. The Apple Notification Center Service Event Handler copies an input buffer into an output buffer without checking that the input fits. Exploitation requires no authentication or user interaction but does require local-network proximity; successful overflow can alter execution, expose or modify data, and interrupt service.

CVSS severity9.6
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer overflow in Behavioral Technology Group Pavlok 20260707 allows remote attackers to corrupt memory via an ANCS event. The Apple Notification Center Service Event Handler copies an input buffer into an output buffer without checking that the input fits. Exploitation requires no authentication or user interaction but does require local-network proximity; successful overflow can alter execution, expose or modify data, and interrupt service.

The record

CVE
CVE-2026-87931
Published
Sep 9, 2026
Updated
Sep 10, 2026
Vendor
Behavioral Technology Group, Inc.
Product
Pavlok
Classifications
CWE-119, CWE-120
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20260707

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Behavioral Technology Group, Inc. · Pavlokversion=20260707

Published CVSS scores

8.7VulDBCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.6VulDB CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.4VulDB CNACVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
8.3VulDB CNAAV:A/AC:L/Au:N/C:C/I:C/A:C
8.7VulDBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

CWE-119Memory Corruption
CWE-120Buffer Overflow

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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