CVE-2025-65221 — Stack-based Buffer Overflow in Ac21 Firmware

CWE-121 — Stack-based Buffer Overflow4 documents4 sources
Severity
4.3MEDIUMNVD
EPSS
0.0%
top 84.93%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Tenda Ac21 Firmware
Timeline
PublishedNov 20

Description

Tenda AC21 V16.03.08.16 is vulnerable to Buffer Overflow via the list parameter of /goform/setPptpUserList.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 2.8 | Impact: 1.4

Affected Packages1 packages

▶NVDtenda/ac21_firmware16.03.08.16

🔴Vulnerability Details

2
GHSA
GHSA-prff-37fr-238x: Tenda AC21 V16↗2025-11-20
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CVEList
CVE-2025-65221: Tenda AC21 V16↗2025-11-20
▶

🔍Detection Rules

1
Suricata
ET WEB_SPECIFIC_APPS Tenda AC10 setPptpUserList list Parameter Buffer Overflow Attempt (CVE-2025-45779, CVE-2025-65221, 2025-15215, 2025-15217)↗2025-05-12
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CVE-2025-65221 — Stack-based Buffer Overflow in Tenda | cvebase