PT-2026-31876 · Tenda · Tenda Ac9

Wxhwxhwxh_Mie · Published 2026-04-10 · Updated 2026-04-10 · CVE-2026-6015

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Tenda AC9 version 15.03.02.13

Description A vulnerability exists in the Tenda AC9 router, specifically in the POST Request Handler component. The formQuickIndex function within the /goform/QuickIndex file is susceptible to a stack-based buffer overflow. This occurs due to manipulation of the PPPOEPassword argument, allowing for remote exploitation. The exploit has been publicly disclosed.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting access to the /goform/QuickIndex file.

Exploit

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2026-06161

CVE-2026-6015

Affected Products

Tenda Ac9

References · 10

• 🔥 https://lavender-bicycle-a5a.notion.site/Tenda-AC9-QuickIndex-33153a41781f80458940f212f150a4fb?source=copy_link · Exploit
• https://bdu.fstec.ru/vul/2026-06161 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-6015 · Security Note
• https://twitter.com/CVEnew/status/2042561756107837610 · Twitter Post
• https://lavender-bicycle-a5a.notion.site/Tenda-AC9-QuickIndex-33153a41781f80458940f212f150a4fb · Note
• https://vuldb.com/vuln/356571 · Note
• https://tenda.com.cn · Note
• https://twitter.com/CveFindCom/status/2042493557018099985 · Twitter Post
• https://vuldb.com/vuln/356571/cti · Note
• https://vuldb.com/submit/791828 · Note