RSA 2048-bit Private Key Handler Vulnerability in Tenda AC10
CVE-2026-5549

6.9MEDIUM

Key Information:

Vendor

Tenda
Status
Ac10
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5549?

The Tenda AC10 router has a security flaw within its RSA 2048-bit Private Key Handler located at /webroot_ro/pem/privkeySrv.pem. This vulnerability allows an unauthorized remote attacker to manipulate and utilize a hard-coded cryptographic key. The exposure of this sensitive key can lead to further exploitation of affected systems, as the flaw has been publicly disclosed, raising concerns for users' security and data integrity.

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Affected Version(s)

AC10 16.03.10.10_multi_TDE01

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-5549 - Proof of Concept

References

https://vuldb.com/vuln/355313
vdb-entry
https://vuldb.com/vuln/355313/cti
signaturepermissions-required
https://vuldb.com/submit/782298
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

CoreNode (VulDB User)
JSON
.