Security readout for executives and security teams
Plain-English summary
Some Epson Expression Home XP255 devices running 20.08.FM10I8 may operate with no administrator password by default. If someone can reach the web admin panel, they may become administrator without credentials. This can expose device settings and potentially affect confidentiality, integrity, and availability.
Executive priority
Treat this as high priority when affected printers sit on shared office, guest, or exposed networks. The business risk is unauthorized control of printer administration, with possible data exposure or service disruption. Prioritize inventory and network restriction first.
Technical view
CVE-2019-20458 describes a default unauthenticated administration condition on Epson Expression Home XP255 20.08.FM10I8. CVSS 3.1 is 8.8 with adjacent-network attack vector, low complexity, no privileges, and no user interaction. The record maps to CWE-276.
Likely exposure
Exposure is most likely for networks with Epson Expression Home XP255 devices on firmware 20.08.FM10I8 where the web admin panel is reachable. The bundle does not prove broader Epson model or firmware impact.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. A public Full Disclosure reference exists, but the provided evidence is not enough to claim real-world exploitation.
Researcher notes
The CVE affected-product metadata is sparse, listing n/a fields, while the description names Epson Expression Home XP255 20.08.FM10I8. Scope should not be expanded beyond that evidence without vendor confirmation. No patch details are included in the provided bundle.
Mitigation direction
- Inventory Epson XP255 devices and record firmware versions.
- Restrict printer web administration to trusted management networks only.
- Check Epson guidance for supported firmware updates or configuration changes.
- Require an admin password where the device and firmware support it.
- Replace or isolate devices that cannot enforce administrative authentication.
Validation and detection
- Identify any Epson XP255 devices running firmware 20.08.FM10I8.
- Confirm the web admin panel requires authentication from allowed networks.
- Review firewall and Wi-Fi segmentation around printer management access.
- Check Epson’s advisory page for current vendor guidance.
- Document any unauthenticated admin interface as a high-priority finding.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-276: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-20458 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://epson.com/Support/wa00826CVE reference
- 20240729 Bunch of IoT CVEsCVE reference · mailing-list
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Default Permissions
Incorrect Default Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.