CVE-2019-20458

Unauthenticated administrator access via passwordless web panel

Published Nov 7, 2024 · Updated Nov 4, 2025

Authentication bypass in Epson Expression Home XP-255 firmware 20.08.FM10I8 allows remote attackers to gain administrator access. The web administration panel is enabled without a password by default, and device setup never prompts for one, so it grants administrative access without credentials. The attacker must reach the printer's TCP port 80 over the local network; access exposes administrative functions and permits settings changes.

CVSS severity8.8
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Epson Expression Home XP-255 firmware 20.08.FM10I8 allows remote attackers to gain administrator access. The web administration panel is enabled without a password by default, and device setup never prompts for one, so it grants administrative access without credentials. The attacker must reach the printer's TCP port 80 over the local network; access exposes administrative functions and permits settings changes.

The record

CVE
CVE-2019-20458
Published
Nov 7, 2024
Updated
Nov 4, 2025
Vendor
Seiko Epson Corporation
Product
Epson Expression Home XP-255
Classifications
CWE-276
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record 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=20.08.fm10i8

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Seiko Epson Corporation · Epson Expression Home XP-255version=20.08.fm10i8

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions

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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