CVE-2026-89057 — Authentication Bypass Using an Alternate Path or Channel in Lenovo Idea Tab Pro TB373FU

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

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.

1. Identify exposed assets running the affected vendor/product/version combinations (Lenovo Idea Tab Pro TB373FU, Lenovo Idea Tab/ Lenovo Tab K11 Gen 2 (TB336FU), Lenovo Idea Tab/ Lenovo Tab K11 Gen 2 (TB336FU/TB336ZU)…).
2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
3. 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.

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.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-288 · Authentication Bypass Using an Alternate Path or Channel

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
• Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.

Timeline

What happened to this CVE, newest first.

• 2026
• Affected products added · lenovo/idea tab pro (tb373fu), lenovo/idea tab/ lenovo tab k11 gen 2 (tb336fu), lenovo/idea tab/ lenovo tab k11 gen 2 (t
  Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 15, 2026
• CVSS changed · 6.8
  Oct 15, 2026 · NIST National Vulnerability Database
• Source status changed · → Received
  Oct 15, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 15, 2026 · Alertas do Telegram
• CVE published
  Oct 15, 2026 · lenovo

Source activity

Repeated readings are counted rather than listed.

• 1× References added · Oct 15, 2026 – Oct 15, 2026
• 1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

• support.lenovo.com/us/en/product_security/LEN-218699
  vendor-advisory, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• Medium CVE-2026-92777 A potential vulnerability was reported in some Lenovo Tablets that could allow a user… 3h
• Low CVE-2025-14058 Missing Authentication for Critical Function in Lenovo Tab M11 TB330FU TB330XU Jan 14, 2026
• Medium CVE-2025-11193 A potential vulnerability was reported in some Lenovo Tablets that could allow a local… Nov 3, 2025

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 FIRST EPSS score.
• No fixed version, patch or mitigation documented.
• No CISA SSVC assessment.
• 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-2026-89057 is "Authentication Bypass Using an Alternate Path or Channel in Lenovo Idea Tab Pro TB373FU", rated Medium. It affects Idea Tab Pro TB373FU (Lenovo); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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