CVE-2026-5550

Tenda AC10 httpd fromSysToolChangePwd stack-based overflow

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Published Apr 5, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
A vulnerability was identified in Tenda AC10 16.03.10.10_multi_TDE01. This affects the function fromSysToolChangePwd of the file /bin/httpd. The manipulation leads to stack-based buffer overflow. The attack may be initiated remotely. Multiple endpoints might be affected.

Analysis

AI-generated

Technical impact

The vulnerability is a stack‑based buffer overflow in the fromSysToolChangePwd function of the Tenda AC10 httpd binary, which can be triggered by a crafted request. The flaw is linked to CWE‑119 and CWE‑121, allowing an attacker to potentially execute arbitrary code or crash the service. The result is a compromise of confidentiality, integrity, and availability of the device.

Affected Systems

Affected are Tenda AC10 routers running firmware version 16.03.10.10_multi_TDE01. The issue resides in the /bin/httpd binary exposed through the web management interface, and multiple points of entry may be impacted.

Risk and Exploitability

The CVSS score of 8.7 indicates high severity, and the flaw can be exploited remotely without local access. EPSS data is unavailable and the vulnerability is not listed in CISA’s KEV catalog, so the risk remains high until a patch is applied. An attacker would need to send a crafted request to the httpd service to trigger the overflow.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Identify whether your AC10 device runs firmware 16.03.10.10_multi_TDE01 or an earlier version.
  • Download and install the latest firmware from Tenda’s official website, ensuring it contains the fix for the overflow.
  • If no corrected firmware is available, block external access to the device’s management interface using firewall rules or a VPN.
  • Monitor the device’s logs for abnormal activity and adjust access controls as needed.

Generated by OpenCVE AI on April 5, 2026 at 10:20 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:h:tenda:ac10:4.0:*:*:*:*:*:*:*
cpe:2.3:o:tenda:ac10_firmware:16.03.10.10_multi_tde01:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}
Type Values Removed Values Added
First Time appeared Tenda ac10
Vendors & Products Tenda ac10
Type Values Removed Values Added
Description A vulnerability was identified in Tenda AC10 16.03.10.10_multi_TDE01. This affects the function fromSysToolChangePwd of the file /bin/httpd. The manipulation leads to stack-based buffer overflow. The attack may be initiated remotely. Multiple endpoints might be affected.
Title Tenda AC10 httpd fromSysToolChangePwd stack-based overflow
First Time appeared Tenda
Tenda ac10 Firmware
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:o:tenda:ac10_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tenda
Tenda ac10 Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, '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'}
Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-121

    Stack-based Buffer Overflow

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Apr 7, 2026, 2:43 AM
Reserved
Apr 4, 2026, 1:28 PM

View source JSON

Updated
Apr 7, 2026, 2:43 AM

JSON

Status
Analyzed
Published
Apr 5, 2026, 8:16 AM
Modified
Jul 24, 2026, 8:10 PM

View source JSON

No data.

Updated
Apr 6, 2026, 9:57 PM

JSON