Security readout for executives and security teams
Plain-English summary
CVE-2026-3272 is a critical buffer overflow in the Tenda F453 router firmware 1.0.0.3. A remote attacker with required access to the device’s web service could potentially crash or take over the device. Public exploit material is reported, but CISA KEV is not listed in the provided sources.
Executive priority
Treat as urgent for any deployed Tenda F453 1.0.0.3 device. Prioritize internet-facing or broadly reachable management interfaces because compromise could affect network availability and control.
Technical view
The issue affects httpd function fromDhcpListClient in /goform/DhcpListClient. Manipulating the page argument can cause a buffer overflow, mapped to CWE-119 and CWE-120. The CVSS 2.0 score is 9.0 with network access, low complexity, authentication required, and complete confidentiality, integrity, and availability impact.
Likely exposure
Organizations using Tenda F453 firmware 1.0.0.3 are exposed, especially if the router web interface is reachable from untrusted networks. Exposure evidence is limited to the affected version and component listed in the sources.
Exploitation context
The source bundle states remote exploitation is possible and public exploit material has been disclosed. It does not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates authentication is required.
Researcher notes
Evidence comes from CVE/VulDB-style reporting and a public GitHub advisory reference. No vendor patch, workaround, or active exploitation confirmation is included in the provided sources. Avoid assuming impact beyond Tenda F453 firmware 1.0.0.3.
Mitigation direction
- Identify any Tenda F453 devices running firmware 1.0.0.3.
- Check Tenda’s official site or support channels for firmware updates or guidance.
- Restrict access to the router web interface to trusted administrative networks.
- Disable internet-facing administration if enabled.
- Monitor for vendor advisories and replace unsupported devices if no fix is available.
Validation and detection
- Inventory edge routers and confirm model and firmware version.
- Verify whether /goform/DhcpListClient is exposed on management interfaces.
- Review firewall rules for remote access to router administration.
- Check logs for unusual authenticated access to router web administration.
- Track CVE and VulDB entries for updated remediation details.
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-119: 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 lookupCWE-120: 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-2026-3272 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 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
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.
AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR810Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
9CriticalVector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-347996 | Tenda F453 httpd DhcpListClient fromDhcpListClient buffer overflowCVE reference · vdb-entry, technical-description
- VDB-347996 | CTI Indicators (IOB, IOC, IOA)CVE reference · signature, permissions-required
- Submit #759603 | Tenda F453 v1.0.0.3 Buffer Access Using Size of Source BufferCVE reference · third-party-advisory
- https://github.com/Litengzheng/vul_db/blob/main/F453/vul_71/README.mdCVE reference · exploit
- https://www.tenda.com.cn/CVE reference · product
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 Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.