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NVD / CVE Program· CNA jpcert

CVE-2022-28717: Cross-site scripting vulnerability in Rebooter(WATCH BOOT nino RPC-M2C [End of Sale] all firmware versions, WATCH BOOT light RPC-M5C [End of

Noroxi assessment

Priority: Monitor (action score 19/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.58% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Cross-site scripting vulnerability in Rebooter(WATCH BOOT nino RPC-M2C [End of Sale] all firmware versions, WATCH BOOT light RPC-M5C [End of Sale] all firmware versions, WATCH BOOT L-zero RPC-M4L [End of Sale] all firmware versions, WATCH BOOT mini RPC-M4H [End of Sale] all firmware versions, WATCH BOOT nino RPC-M2CS firmware version 1.00A to 1.00D, WATCH BOOT light RPC-M5CS firmware version 1.00A to 1.00D, WATCH BOOT L-zero RPC-M4LS firmware version 1.00A to 1.20A, and Signage Rebooter RPC-M4HSi firmware version 1.00A), PoE Rebooter(PoE BOOT nino PoE8M2 firmware version 1.00A to 1.20A), Scheduler(TIME BOOT mini RSC-MT4H [End of Sale] all firmware versions, TIME BOOT RSC-MT8F [End of Sale] all firmware versions, TIME BOOT RSC-MT8FP [End of Sale] all firmware versions, TIME BOOT mini RSC-MT4HS firmware version 1.00A to 1.10A, and TIME BOOT RSC-MT8FS firmware version 1.00A to 1.00E), and Contact Converter(POSE SE10-8A7B1 firmware version 1.00A to 1.20A) allows a remote attacker with the administrative privilege to inject an arbitrary script via unspecified vectors.

MediumCVSS 4.8 · v3.1—No exploit No fix recorded
Published
May 18, 2022
Updated
Jun 17, 2026
EPSS
0.5% · 47th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-28717

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
meikyowatch boot nino rpc-m2c firmware
meikyowatch boot nino rpc-m2c
meikyowatch boot light rpc-m5c firmware
meikyowatch boot light rpc-m5c
meikyowatch boot l-zero rpc-m4l firmware
meikyowatch boot l-zero rpc-m4l
meikyowatch boot mini rpc-m4h firmware
meikyowatch boot mini rpc-m4h
meikyowatch boot nino rpc-m2cs firmware
meikyowatch boot nino rpc-m2cs
meikyowatch boot light rpc-m5cs firmware
meikyowatch boot light rpc-m5cs

and 18 more

Limit the impact of XSS

This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.

Check security headers

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • meikyo poe boot nino poe8m2 firmware1.00a and later · up to 1.20a inclusive
  • meikyo pose se10-8a7b1 firmwareall versions
  • meikyo pose se10-8a7b1 firmware1.00a and later · up to 1.20a inclusive
  • meikyo signage rebooter rpc-m4hsi firmware1.00a
  • meikyo time boot mini rsc-mt4h firmwareall versions
  • meikyo time boot mini rsc-mt4hs firmware1.00a and later · up to 1.10a inclusive
  • meikyo time boot rsc-mt8f firmwareall versions
  • meikyo time boot rsc-mt8fp firmwareall versions
  • meikyo time boot rsc-mt8fs firmware1.00a and later · up to 1.00e inclusive
  • meikyo watch boot l-zero rpc-m4l firmwareall versions
  • meikyo watch boot l-zero rpc-m4ls firmware1.00a and later · up to 1.20a inclusive
  • meikyo watch boot light rpc-m5c firmwareall versions
  • meikyo watch boot light rpc-m5cs firmware1.00a and later · up to 1.00d inclusive
  • meikyo watch boot mini rpc-m4h firmwareall versions
  • meikyo watch boot nino rpc-m2c firmwareall versions
  • meikyo watch boot nino rpc-m2cs firmware1.00a and later · up to 1.00d inclusive

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.

  • MEIKYO ELECTRIC CO.,LTD. Rebooter, PoE Rebooter, Scheduler, and Contact Converter

    • Rebooter(WATCH BOOT nino RPC-M2C [End of Sale] all firmware versions, WATCH BOOT light RPC-M5C [End of Sale] all firmware versions, WATCH BOOT L-zero RPC-M4L [End of Sale] all firmware versions, WATCHaffected

Same product

meikyo: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-27632Cross-site request forgery (CSRF) vulnerability in Rebooter(WATCH BOOT nino RPC-M2C [End of Sale] all firmware versions, WATCH BOOT light RP
    35Monitor

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.

No history yet (it accumulates with the daily EPSS job).

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 researchers

Finders, 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

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

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

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records