CVE-2026-32326 — Missing Authentication for Critical Function in Sharp 5G Mobile Router SH-U01
SHARP routers do not perform authentication for some web APIs. The device information may be retrieved without authentication. If the administrative password of the device is left as the initial one, the device may be taken over.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 0.3% (30-day exploitation probability)+3
- Technical severity (medium)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Sharp 5G Mobile Router SH-U01, Sharp home 5G HR01, Sharp home 5G HR02…).
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Sharp | 5G Mobile Router SH-U01 | version S4.48.00 and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | home 5G HR01 | version 38JP_0_490 and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | home 5G HR02 | version S5.A1.00 and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | Pocket WiFi 5G A503SH | version S7.41.00 and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | Speed Wi-Fi 5G X01 | version 3RJP_2_03I and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | Wi-Fi STATION SH-52A | version 38JP_2_03J and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | Wi-Fi STATION SH-52B | version S3.87.15 and earlierr | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Sharp | Wi-Fi STATION SH-54C | version S6.64.00 and earlier | Vulnerable | CVE Program (cve.org) e CISA ADP |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.9 | CVSS 4.0 | Medium | — | — | vultures@jpcert.or.jp via NIST National Vulnerability Database |
| 6.9 | CVSS 4.0 | Medium | — | — | jpcert via CVE Program (cve.org) e CISA ADP |
| 5.7 | CVSS 3.0 | Medium | 2.1 | 3.6 | vultures@jpcert.or.jp via NIST National Vulnerability Database |
| 5.7 | CVSS 3.0 | Medium | — | — | jpcert via CVE Program (cve.org) e CISA ADP |
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N (score shown at the top: vultures@jpcert.or.jp) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
EPSS over time FIRST
Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.30%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · sharp corporation/home 5g hr01, sharp corporation/home 5g hr02, sharp corporation/wi-fi station sh-52a, sharp corporatio
- SSVC assessment updated
- Record published
- CVSS changed · 5.7
- Source status changed · → Awaiting Analysis
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
2 on the record
Elsewhere on this site
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No fixed version, patch or mitigation documented.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-32326 is "Missing Authentication for Critical Function in Sharp 5G Mobile Router SH-U01", rated Medium. It affects 5G Mobile Router SH-U01 (Sharp); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.7 describes technical severity. EPSS 0.30% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
Comments
Moderated technical discussion. Read the community guidelines.
No comments yet.
Sign in or create an account to comment and suggest corrections.