Major Vulnerabilities Found in TP
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2024-21827 | A leftover debug code vulnerability exists in the cli_server debug functionality of Tp-Link ER7206 Omada Gigabit VPN Router 1.4.1 Build 20240117 Rel.57421. A leftover debug code vulnerability exists in the cli_server debug functionality of Tp-Link ER7206 Omada Gigabit VPN Router 1.4.1 Build 20240117 Rel.57421. A specially crafted series of network requests can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger this vulnerability. NVD description · AI analysis pending | 7.2 | <1% | PoC |
| — | |
| CVE-2025-7850 | A command injection vulnerability may be exploited after the admin's authentication on the web portal on Omada gateways. A command injection vulnerability may be exploited after the admin's authentication on the web portal on Omada gateways. NVD description · AI analysis pending | 9.3 | 3% |
| — | ||
| CVE-2025-7851 | An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways. An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways. NVD description · AI analysis pending | 8.7 | <1% |
| — |
Full article414 words · extracted from infosecurity-magazine.com · click to collapse
Researchers at Forescout’s Vedere Labs have discovered two new vulnerabilities in TP-Link’s Omada and Festa VPN routers that could allow threat actors to perform command injection and unauthorized root access.
These flaws, tracked as CVE-2025-7850 and CVE-2025-7851, are respectively considered critical (CVSS 4.0 of 9.3) and high-severity (CVSS 4.0 of 8.7).
According to a Vedere Labs report published on October 23, these vulnerabilities come from what the researchers described as an incomplete fix of CVE-2024-21827 by TP-Link in 2024 which left debug functionality accessible, meaning that partial remediation created alternate attack paths.
After rooting a TP-Link Omada ER605v2 router, they discovered that the patch addressed CVE-2024-21827, but left two serious caveats:
- The same private key used across multiple devices was required for both root access and firmware signing
- The old “debug code” remained, which meant that if an attacker could create the “image_type_debug” file via another vulnerability or hidden feature, the original root login path could still be exploitable
This issue was reported to TP-Link, which assigned it CVE-2025-7851, as a flaw that allows unauthorized root access to some Omada and Festa VPN routers through residual debug code.
“However, CVE-2025-7851 alone was insufficient for us to root the ER605v2 directly: we didn’t have the private key and the “image_type_debug” file was not present in the public firmware,” the Vedere Labs researchers wrote.
They analyzed the use of LuCI, a Lua-based framework for configuring devices via the web UI or other interfaces, by many TP-Link products with “a history of vulnerabilities.”
The researchers quickly found that the WireGuard VPN settings in the Web UI of the ER605v2 router exposed a private-key field that was not properly sanitized, allowing an authenticated user to inject arbitrary OS commands that the device executes with root privileges. This vulnerability was also reported to TP-Link, which assigned it CVE-2025-7850.
Additionally, the researchers’ analysis revealed that CVE-2025-7850 can be exploited without credentials in certain deployments, with potential exploit scenarios beyond initial local exploitation.
The patches for these two vulnerabilities have now been released by TP-Link.
Vedere Labs recommended users to apply TP-Link’s firmware patches immediately and to add further security controls, including the following:
- Deploying web application firewalls before management interfaces and blocking command injection and web-based attacks
- Disabling remote administration where feasible
- Logging all admin sessions and router traffic and looking out for anomalies and exploitation indicators
- Reviewing vendor support mechanisms on TP-Link devices
Read now: US Bipartisan Committee Urges Investigation Into Chinese Wi-Fi Routers
Text extracted automatically; images, tables and formatting may be missing. Original: https://www.infosecurity-magazine.com/news/vulnerabilities-tplink-vpn-routers/