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TI-2026-54248 Aliases CVE-2026-77945GHSA-399f-4wg3-w73h

TRENDnet TEW-821DAP ssi upload.cgi command injection

Priority MEDIUM 57CWE-74Published · 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
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an unknown function of the file /cgi-bin/upload.cgi of the component ssi. Performing a manipulation of the argument filename results in command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01768 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
TRENDnetTEW-821DAP2.2.01b05—No fix listedCNA
  • TEW-821DAP VendorTRENDnet Affected 2.2.01b05 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*——TRENDnet
  • cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:* Versions — — ·TRENDnet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77945
  2. 2026-10-03 Alias added: GHSA-399f-4wg3-w73h

References

Exploit 1

  • TI-2015-01070 The ping tool in multiple D-Link and TRENDnet devices allow remote attackers to execute… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-70883 OS command injection in TRENDnet TEW-751DR and related routers CVSS 4.0CRITICAL 10.0
  • TI-2026-54249 TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-53047 TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-53046 TRENDnet TEW-WLC100P DHCP blobmsg netifd stack-based overflow CVSS 4.0CRITICAL 9.4
  • TI-2024-37951 TRENDnet TEW-632BRP v1.010B31 devices have an OS command injection vulnerability in the… CVSS 3.1CRITICAL 9.8
See all 240 →

Sources

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