Security readout for executives and security teams
Plain-English summary
This flaw lets someone who can reach the Tenda W30E V2 maintenance interface change account passwords without proving they know the current password. That can lock out administrators or enable device takeover. The sources do not state that a vendor fix exists or that attacks are happening in the wild.
Executive priority
Treat this as high priority for any deployed W30E V2 used in business networks. Prioritize internet-facing or broadly reachable management interfaces first because successful abuse can disrupt administration and compromise device control.
Technical view
CVE-2026-24440 is a CWE-620 password-change weakness in Shenzhen Tenda W30E V2 firmware up to and including V16.01.0.19(5037). The CVSS 4.0 vector indicates network access, low attack complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to Tenda W30E V2 devices running affected firmware where the maintenance interface is reachable. Risk is highest if management access is exposed to untrusted networks or shared internal networks with many low-privileged users.
Exploitation context
The bundle marks CISA KEV status as false and provides no cited evidence of active exploitation. The described attack requires access to the affected endpoint and low privileges according to the CVSS vector.
Researcher notes
The provided affected data is sparse, but the description names firmware through V16.01.0.19(5037). No patch, exploit, or active campaign evidence is included. Validation should focus on asset exposure, management-plane reachability, and vendor advisory tracking.
Mitigation direction
- Identify W30E V2 devices and firmware up to V16.01.0.19(5037).
- Restrict the maintenance interface to trusted administrative networks or VPN only.
- Check Tenda and VulnCheck guidance for fixed firmware or official mitigation.
- Monitor and investigate unexpected password, account, or configuration changes.
- Rotate device credentials after remediation or suspected unauthorized access.
- Isolate or replace affected devices if no vendor fix is available.
Validation and detection
- Inventory Tenda W30E V2 assets and record firmware versions.
- Confirm management interfaces are not reachable from the internet.
- Review access controls for the maintenance interface.
- Check logs or configuration history for unexpected password changes.
- Track vendor advisories for a fixed firmware release or mitigation.
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-620: 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-24440 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
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-allows-password-change-without-verifying-current-passwordCVE 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.
Unverified Password Change
Unverified Password Change represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.