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Public proof of conceptFix available

CVE-2025-1851

A public proof of concept exists; no exploitation attested.

  • Published2025-03-03
  • Fixed in15.03.06.44
  • WeaknessCWE-119 · CWE-121

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability, which was classified as critical, was found in Tenda AC7 up to 15.03.06.44. This affects the function formSetFirewallCfg of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Timeline

dates in UTC
  1. 2025-03-0305:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-1851?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-1851?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Tenda ac7 firmwareversion to verify
BranchAffectedFixed in
15.3< 15.03.06.4415.03.06.44

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Tenda ac7 firmware to 15.03.06.44

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2025-03-03
  • OpenCVESSVC decisionpoc—
  • CNACVSS 4.08.7read 2026-10-23
  • CNACVSS 3.18.8read 2026-10-23
  • CNACVSS 2.09read 2026-10-23
  • CNAweakness (CWE)CWE-119, CWE-121read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2025-03-03
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2025-1851?

A vulnerability, which was classified as critical, was found in Tenda AC7 up to 15.03.06.44. This affects the function formSetFirewallCfg of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Is CVE-2025-1851 actively exploited?

A proof-of-concept exploit exists for CVE-2025-1851, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-1851?

CVE-2025-1851 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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