CVE-2026-39047Public exploitNetwork attack vector

Unauthenticated service interruption via malformed RAW payloads

Published May 20, 2026 · Updated May 20, 2026

Stack-based buffer overflow in EPSON L14150 firmware FL27PB allows remote attackers to interrupt service through TCP port 9100. The disclosure identifies malformed RAW print-job handling in the embedded printing parser but does not identify the copy or bounds check that fails. Unauthenticated TCP access is sufficient; CISA supports service interruption, not the source description's code-execution claim.

CVSS severity7.5
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in EPSON L14150 firmware FL27PB allows remote attackers to interrupt service through TCP port 9100. The disclosure identifies malformed RAW print-job handling in the embedded printing parser but does not identify the copy or bounds check that fails. Unauthenticated TCP access is sufficient; CISA supports service interruption, not the source description's code-execution claim.

The record

CVE
CVE-2026-39047
Published
May 20, 2026
Updated
May 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint 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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