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Description

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.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-29 | Updated 2026-03-30 | Assigner VulDB




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

1.0.0.3
affected

Timeline

2026-03-27:Advisory disclosed
2026-03-27:VulDB entry created
2026-03-27:VulDB entry last update

Credits

LtzHust2 (VulDB User) reporter

References

vuldb.com/vuln/353906 (VDB-353906 | Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow) vdb-entry technical-description

vuldb.com/vuln/353906/cti (VDB-353906 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/778415 (Submit #778415 | Tenda F453 v1.0.0.3 Stack-based Buffer Overflow) third-party-advisory

github.com/...ngzheng/vul_db/blob/main/F453/vul_92/README.md exploit

www.tenda.com.cn/ product

cve.org (CVE-2026-5021)

nvd.nist.gov (CVE-2026-5021)

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