9.8

CVE-2026-27849: Missing neutralization in Linksys MR9600, Linksys MX4200

Deferred
Published 25-02-2026Last modified 26-02-2026

Vulnerability summary

CVE-2026-27849 is a critical (CVSS 9.8) OS Command Injection vulnerability in linksys mr9600_firmware. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.60%
0%100%
Low · +0.28 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 25-02-2026
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

Increase +0.28 pp

From 0.31% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Linksys2 products

1 vendor · 2 products

References

1 links