Untrusted search path vulnerability in the installers of multiple SEIKO EPSON products allows an attacker to gain privileges via a Trojan ho
Untrusted search path vulnerability in the installers of multiple SEIKO EPSON products allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.
- Published
- Nov 24, 2020
- Updated
- Jun 16, 2026
- EPSS
- 0.3% · 25th percentile
- CWE
- CWE-427
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| epson | net print | cpe:2.3:a:epson:net_print |
| epson | album print | cpe:2.3:a:epson:album_print |
| epson | color calibration utility | cpe:2.3:a:epson:color_calibration_utility |
| epson | colorbase | cpe:2.3:a:epson:colorbase |
| epson | colorio easy print | cpe:2.3:a:epson:colorio_easy_print |
| epson | connect | cpe:2.3:a:epson:connect |
| epson | creativity suite | cpe:2.3:a:epson:creativity_suite |
| epson | e-photo | cpe:2.3:a:epson:e-photo |
| epson | easy photo print | cpe:2.3:a:epson:easy_photo_print |
| epson | easy settings | cpe:2.3:a:epson:easy_settings |
| epson | imaging workshop | cpe:2.3:a:epson:imaging_workshop |
| epson | link2 | cpe:2.3:a:epson:link2 |
and 25 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- epson album printall versions
- epson color calibration utilityall versions
- epson colorbaseall versions
- epson colorio easy printall versions
- epson connectall versions
- epson creativity suiteall versions
- epson e-photoall versions
- epson easy photo printall versions
- epson easy settingsall versions
- epson ec-01 firmwareall versions
- epson imaging workshopall versions
- epson link2all versions
- epson multi-print quickerall versions
- epson net configall versions
- epson net config seall versions
- epson net printall versions
- epson net software development kitall versions
- epson photolierall versions
- epson photoquickerall versions
- epson photostarter3.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (jpcert). Independent of NVD's CPE analysis and usually ahead of it.
SEIKO EPSON CORPORATION the installers of multiple SEIKO EPSON products
- A wide range of versions for the following products are affected -- Epson Web Installer, EPSON printer drivers, EPSON scanner drivers, EPSON Scan ICM Updaters, EPSON Printer Window!3, EPSON Printer Wiaffected
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-427 · Uncontrolled Search Path ElementCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
- Hijack Execution Flow:DLL search order hijackingT1574.001
- Hijack Execution Flow: Dylib HijackingT1574.004
- Hijack Execution Flow: Path Interception by PATH Environment VariableT1574.007
- Hijack Execution Flow: Path Interception by Search Order HijackingT1574.008
- Hijack Execution Flow: Path Interception by Unquoted PathT1574.009
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- jvn.jp/en/jp/JVN26835001/index.html
- www.epson.jp/support/misc_t/201119_oshirase.htm
- www.epson.jp/support/pdf/fy20-001_softwareList_20201106_b.pdf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.