Security readout for executives and security teams
Plain-English summary
Tenda W30E V2 devices may allow unlimited attempts to guess administrator passwords. If the management interface is reachable by an attacker, weak or reused credentials could lead to device takeover. The sources do not state active exploitation or a confirmed vendor patch.
Executive priority
Treat as urgent for any deployed W30E V2 reachable outside a controlled management network. Prioritize isolation and credential hardening while awaiting vendor-confirmed remediation.
Technical view
CVE-2026-24436 is a CWE-307 failure in Shenzhen Tenda W30E V2 firmware through V16.01.0.19(5037). Authentication endpoints reportedly lack rate limiting or account lockout, enabling unrestricted brute-force attempts against administrative credentials over the network.
Likely exposure
Exposure is most likely where Tenda W30E V2 administrative authentication is reachable from untrusted networks, especially with weak, shared, or default-like credentials.
Exploitation context
The source bundle marks this as critical with CVSS 4.0 score 9.2. KEV is false, and provided sources do not claim active exploitation.
Researcher notes
Evidence supports a rate-limiting/account-lockout weakness, not a bypass or code execution flaw. The record does not provide proof-of-concept details, exploitation telemetry, or a named fixed firmware version.
Mitigation direction
- Check Tenda guidance for updated firmware or official remediation.
- Restrict administrative access to trusted management networks only.
- Use strong, unique administrator credentials for every device.
- Apply upstream rate limiting or access controls where feasible.
- Monitor authentication failures for repeated guessing behavior.
Validation and detection
- Inventory all Tenda W30E V2 devices in use.
- Identify firmware versions up to V16.01.0.19(5037).
- Confirm admin interfaces are not reachable from untrusted networks.
- Review logs for repeated failed administrator logins.
- Track CVE, Tenda, and VulnCheck pages for remediation updates.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-307: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-24436 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.2 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.2CriticalVector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.tendacn.com/product/W30ECVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/tenda-w30e-v2-lacks-rate-limiting-on-authenticationCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Excessive Authentication Attempts
Improper Restriction of Excessive Authentication Attempts represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.