High 8.8Published Mar 26, 2026

CVE-2026-4903Tenda AC5 POST Request QuickIndex formQuickIndex memory corruption

Updated under an hour ago (Oct 26, 2026, 5:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Tenda AC5

Exploited in the last 30 days

A flaw has been found in Tenda AC5 15.03.06.47. This vulnerability affects the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. This manipulation of the argument PPPOEPassword causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published and may be used.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/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 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Tenda AC5 tenda:ac5_firmware	15.03.06.47	CNA record
tenda ac5_firmware tenda:ac5_firmware	15.03.06.47	NVD

References

https://vuldb.com/?id.353654vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.353654signature, permissions-required, vdb-entry
https://vuldb.com/?submit.777380third-party-advisory, vdb-entry
https://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_linkexploit, 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.