CVE-2026-4254Tenda AC8 HTTP Endpoint SysToolChangePwd doSystemCmd stack-based overflow
Updated under an hour ago ()
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It affects Tenda AC8. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
- Weakness (CWE)
- CWE-121, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Mar 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Tenda AC8 tenda:ac8_firmware | 16.03.50.0; 16.03.50.1; 16.03.50.2; 16.03.50.3; 16.03.50.4; 16.03.50.5; 16.03.50.6; 16.03.50.7; and 4 more ranges | CNA record |
tenda ac8_firmware tenda:ac8_firmware | through 16.03.50.11 | NVD |
References
- https://vuldb.com/?id.351212vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.351212signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.771773third-party-advisory, vdb-entry
- https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.mdexploit, third-party-advisory
- https://www.tenda.com.cn/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.