CVE-2026-79840

Application crash via stack-based buffer overflow

Published Oct 15, 2026 · Updated Oct 15, 2026

Stack-based buffer overflow in HPE NonStop XA Broker T0804L40 and earlier allows local users to crash it via unspecified vectors. HPE has not disclosed the affected function, triggering input, or erroneous buffer operation. Exploitation requires low-privileged local access and user interaction; the described consequence is memory corruption followed by an application crash.

CVSS severity7.3
High
EPSS probability0.09%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in HPE NonStop XA Broker T0804L40 and earlier allows local users to crash it via unspecified vectors. HPE has not disclosed the affected function, triggering input, or erroneous buffer operation. Exploitation requires low-privileged local access and user interaction; the described consequence is memory corruption followed by an application crash.

The record

CVE
CVE-2026-79840
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
Hewlett Packard Enterprise
Product
HPE NonStop XA Broker
Classifications
CWE-121, CAPEC-100
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=T0804L40 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Hewlett Packard Enterprise · HPE NonStop XA Brokerversion=T0804L40 and earlier

Published CVSS scores

7.3Hewlett Packard EnterpriseCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CAPEC-100Overflow Buffers

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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