Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated network attacker change DNS settings on certain Tenda routers running V5.07.64_en. If exploited, users behind the router could be silently redirected to attacker-controlled destinations. Public exploit information exists, but the provided sources do not show confirmed active exploitation.
Executive priority
Treat this as urgent for any affected router in production, especially at branch offices or small sites. The business risk is loss of trust in web traffic routing and possible credential theft. Prioritize exposure reduction, DNS verification, and replacement planning if no fix is available.
Technical view
CVE-2018-25317 is an insufficient session validation issue in Tenda W3002R/A302/W309R V5.07.64_en. The vulnerable DNS configuration endpoint accepts requests when a crafted language cookie is supplied, allowing DNS server changes without authentication. The CVSS v3.1 score is 9.8, reflecting network reachability, no privileges, and high impact.
Likely exposure
Exposure is highest where affected Tenda router administration interfaces are reachable from untrusted networks. Internet-exposed devices are especially concerning. Internal-only devices still matter because DNS manipulation can affect all users relying on the router for name resolution.
Exploitation context
A public ExploitDB entry is referenced, so defenders should assume practical exploit knowledge is available. The source bundle does not include CISA KEV status or other evidence of active exploitation. The impact is traffic redirection through unauthorized DNS changes, which can enable phishing, interception, or malware delivery.
Researcher notes
The provided record cites CWE-290 and CVSS 9.8. Sources identify a DNS-change weakness involving insufficient session validation and a crafted cookie. Avoid assuming broader firmware versions or models beyond the cited W3002R/A302/W309R V5.07.64_en evidence. No patch details are present in the supplied sources.
Mitigation direction
- Check Tenda guidance for affected models and firmware remediation.
- Disable remote administration from the internet where possible.
- Restrict router management access to trusted internal hosts.
- Review and correct router DNS settings immediately.
- Replace or retire affected devices if no vendor fix is available.
- Monitor for unexpected DNS configuration changes.
Validation and detection
- Inventory Tenda W3002R, A302, and W309R routers.
- Confirm whether firmware is V5.07.64_en.
- Verify management interfaces are not internet-exposed.
- Review configured primary and secondary DNS servers.
- Check logs or configuration history for unauthorized changes.
- Track vendor advisories for firmware or replacement guidance.
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-290: 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-2018-25317 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-44380CVE reference · exploit
- VulnCheck Advisory: Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS ChangeCVE reference · 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.
Authentication Bypass by Spoofing
Authentication Bypass by Spoofing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.