CVE-2026-5549Public exploitNetwork attack vector

TLS private-key disclosure via web-accessible PEM file

Published Apr 5, 2026 · Updated Apr 5, 2026

Hard-coded key exposure in Tenda AC10 16.03.10.10_multi_TDE01 allows remote attackers to retrieve the router's TLS private key. The HTTP server places its unencrypted RSA key at /webroot_ro/pem/privkeySrv.pem inside the web root and serves it without authentication. Network access to the management interface is sufficient, exposing TLS sessions to decryption and router impersonation.

CVSS severity7.5
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded key exposure in Tenda AC10 16.03.10.10_multi_TDE01 allows remote attackers to retrieve the router's TLS private key. The HTTP server places its unencrypted RSA key at /webroot_ro/pem/privkeySrv.pem inside the web root and serves it without authentication. Network access to the management interface is sufficient, exposing TLS sessions to decryption and router impersonation.

The record

CVE
CVE-2026-5549
Published
Apr 5, 2026
Updated
Apr 5, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC10
Classifications
CWE-321, CWE-320, T1552.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.03.10.10_multi_TDE01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC10version=16.03.10.10_multi_TDE01

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0VulDBAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key
CWE-320Key Management Errors
T1552.004Unsecured Credentials: Private Keys

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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