Critical severity · published Feb 25, 2026
CVE-2026-27848
Missing neutralization in Linksys MR9600, Linksys MX4200
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
Due to missing neutralization of special elements, OS commands can be injected via the handshake of a TLS-SRP connection, which are ultimately run as the root user.
This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MR
MR9600 · Linksys
1.0.4.205530 · source: vendor
MX
MX4200 · Linksys
1.0.13.210200 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27848
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27848
www.syss.de
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-010.txt
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