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TI-2026-04379 Aliases CVE-2026-5021GHSA-pcxg-4cp2-qqj4

Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow

Priority HIGH 73CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A flaw has been found in Tenda F453 1.0.0.3. This affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. This manipulation of the argument delno causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00644 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaF4531.0.0.3—No fix listedCNA
  • F453 VendorTenda Affected 1.0.0.3 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:f453_firmware:1.0.0.3:*:*:*:*:*:*:*1.0.0.3VulnerableTenda
cpe:2.3:h:tenda:f453:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:f453_firmware:1.0.0.3:*:*:*:*:*:*:* Versions 1.0.0.3 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:f453:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Tenda

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5021
  2. 2026-10-03 Alias added: GHSA-pcxg-4cp2-qqj4

References

Exploit 1

Other 1

  • TI-2026-02916 Tenda F453 L7Im frmL7ImForm buffer overflow CVSS 4.0HIGH 8.7
  • TI-2026-02915 Tenda F453 SetIpBind fromSetIpBind buffer overflow CVSS 4.0HIGH 8.7
  • TI-2026-02914 Tenda F453 qossetting fromqossetting buffer overflow CVSS 4.0HIGH 8.7
  • TI-2026-02913 Tenda F453 SafeUrlFilter fromSafeUrlFilter buffer overflow CVSS 4.0HIGH 8.7
  • TI-2026-02912 Tenda F453 SafeMacFilter fromSafeMacFilter buffer overflow CVSS 4.0HIGH 8.7
  • TI-2026-03958 Tenda F453 Parameters Natlimit fromNatlimit stack-based overflow CVSS 4.0HIGH 8.7
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences