CVE-2026-27847
Missing authentication in Linksys MR9600, Linksys MX4200
Description
Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.
INFO
Published Date :
Feb. 25, 2026, 4:23 p.m.
Last Modified :
Feb. 27, 2026, 2:06 p.m.
Remotely Exploit :
Yes !
Source :
a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Affected Products
The following products are affected by CVE-2026-27847
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update TLS/SSL software to the latest version.
- Apply vendor-provided patches for affected devices.
- Review and sanitize all TLS-SRP handshake inputs.
- Monitor database for unauthorized credential insertions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27847.
| URL | Resource |
|---|---|
| https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-009.txt |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27847 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27847
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27847 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27847 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 26, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Feb. 25, 2026
Action Type Old Value New Value Added Description Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200. Added CWE CWE-89 Added Reference https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-009.txt