CVE-2025-8939 is a critical buffer overflow vulnerability affecting Tenda AC20 routers running firmware up to version 16.03.08.12, specifically within the /goform/WifiGuestSet function when processing the 'shareSpeed' argument. This flaw carries a CVSS score of 8.8 (High), indicating a severe risk due to its network-based attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise. While exploit code has been publicly disclosed, there is currently no evidence of active exploitation, and it lacks significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 16.03.08.0, <= 16.03.08.12CPE matchmatch criteria | cpe:2.3:o:tenda:ac20_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.