Multiple SEIKO EPSON printers and scanners keep already revoked root certificates
Multiple SEIKO EPSON printers and scanners contain revoked root certificates.
CSIRTS triage
- What
- Multiple SEIKO EPSON printers and scanners contain revoked root certificates that remain embedded in the device firmware.
- Who is affected
- SEIKO EPSON printer and scanner users with affected device models.
- Urgency
- Medium priority; revoked certificates weaken device security and trust validation mechanisms.
- Action
- Contact SEIKO EPSON support for firmware updates removing revoked root certificates or implementing certificate pinning workarounds for CVE-2026-73542.
AI-assisted analysis generated from the source advisory — verify against the original.
Details
Original advisory: https://jvn.jp/en/vu/JVNVU91609598/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-735420.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-73542 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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