Read the docs
TI-2026-01798 Aliases CVE-2026-2148GHSA-jp5v-2v6v-3w4h

Tenda AC21 Web Management DownloadFlash information disclosure

Priority MEDIUM 64CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-284.

Summary

A security vulnerability has been detected in Tenda AC21 16.03.08.16. Affected is an unknown function of the file /cgi-bin/DownloadFlash of the component Web Management Interface. The manipulation leads to information disclosure. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00603 49th 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
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
TendaAC2116.03.08.16—No fix listedCNA
  • AC21 VendorTenda Affected 16.03.08.16 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tenda:ac21_firmware:16.03.08.16:*:*:*:*:*:*:*16.03.08.16VulnerableTenda
cpe:2.3:h:tenda:ac21:-:*:*:*:*:*:*:*not specified by NVDRunning onTenda
  • cpe:2.3:o:tenda:ac21_firmware:16.03.08.16:*:*:*:*:*:*:* Versions 16.03.08.16 Vulnerable ·Tenda
  • cpe:2.3:h:tenda:ac21:-:*:*:*:*:*:*:* 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-2026-2148
  2. 2026-10-03 Alias added: GHSA-jp5v-2v6v-3w4h

References

Exploit 1

Other 1

  • TI-2025-08798 Tenda AC21/AC23 GetParentControlInfo stack-based overflow CVSS 4.0CRITICAL 9.3
  • TI-2026-01322 Tenda AC21 AdvSetMacMtuWan fromAdvSetMacMtuWan stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2025-12293 Tenda AC21 SetSysTimeCfg stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2025-12292 Tenda AC21 SetIpMacBind stack-based overflow CVSS 4.0HIGH 8.7
  • TI-2025-11565 Tenda AC21 SetPptpServerCfg formSetPPTPServer buffer overflow CVSS 4.0HIGH 8.7
  • TI-2025-10159 Tenda AC21 SetStaticRouteCfg sscanf buffer overflow CVSS 4.0HIGH 8.7
See all 28 →

Sources

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