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CVE Record

CVE-2019-20459: An issue was discovered on Epson Expression Home XP255 20.08.FM10I8 devices.

An issue was discovered on Epson Expression Home XP255 20.08.FM10I8 devices. With the SNMPv1 public community, all values can be read, and with the epson community, all the changeable values can be written/updated, as demonstrated by permanently disabling the network card or changing the DNS servers.

HighCVSS 8.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This CVE describes insecure SNMP behavior on Epson Expression Home XP255 20.08.FM10I8 devices. A default public community can read values, and an epson community can write changeable values. Business impact is device disruption or unsafe configuration changes, including DNS changes or disabling the network card.

Executive priority

Treat this as a high-priority internal exposure issue where the named Epson printers exist. The main risk is disruption or silent configuration tampering, especially in flat networks or unmanaged printer fleets.

Technical view

The record reports SNMPv1 community exposure: public allows full value reads, while epson allows writable values to be updated. The CVSS 3.1 score is 8.4 with high confidentiality, integrity, and availability impact. The provided affected metadata is incomplete, but the description names Epson Expression Home XP255 20.08.FM10I8 devices.

Likely exposure

Organizations with Epson Expression Home XP255 devices running firmware 20.08.FM10I8 are the named exposure. Risk is highest where printer SNMP is reachable from user networks, print VLANs, or untrusted internal segments.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Public disclosure exists via Full Disclosure, and the CVE description includes examples of disruptive configuration changes, but no active abuse is cited.

Researcher notes

Affected product metadata in the CVE bundle is incomplete, despite the description naming a model and firmware. The Epson reference may contain vendor guidance, but no specific patch details are provided in the bundle. Avoid expanding scope beyond the named device without separate evidence.

Mitigation direction

  • Check Epson advisory guidance for this model and firmware.
  • Remove affected printers from untrusted or broadly reachable networks.
  • Disable SNMPv1 if the device supports it.
  • Restrict printer management access to trusted administration hosts.
  • Replace default SNMP communities where configurable.
  • Monitor for unexpected DNS or network configuration changes.

Validation and detection

  • Inventory Epson Expression Home XP255 devices and firmware versions.
  • Confirm whether firmware 20.08.FM10I8 is present.
  • Review whether SNMPv1 is enabled on affected printers.
  • Verify default public and epson communities are not usable.
  • Check recent printer DNS and network settings for unauthorized changes.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2019-20459 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.4CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.4High
CVSS 3.1 vector shape for CVE-2019-20459Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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